comprised of

Writers often write "comprised of" when they mean "made up of." Many editors call that nonstandard. Use "comprise" without "of" or swap in a safer alternative to match tone and audience.

Quick answer

Avoid "comprised of." Either use "comprise" without "of" (The whole comprises the parts) or replace the phrase with a standard alternative: "is composed of," "consists of," "is made up of," "contains," or "includes."

The committee comprises five members. (comprise + direct object)
The committee is composed of five members. / The committee consists of five members. (safe alternatives)
When you see "comprised of," either drop "of" or pick a safe swap depending on tone.

Core explanation: what "comprise" means

"Comprise" means "to include" or "to consist of" and traditionally takes the whole as subject and the parts as direct object: The set comprises A, B, and C. Adding "of" creates the nonstandard phrase "comprised of" by analogy with "composed of."

Correct: The package comprises documentation, code, and tests.
Avoid: The package is comprised of documentation, code, and tests - prefer a rewrite.
Safe alternates: The package is composed of / consists of / is made up of documentation, code, and tests.

Grammar detail: subject, object, and the stray "of"

With "comprise," the whole is the grammatical subject and the parts are the object. Adding "of" turns the construction into a pseudo-passive that breaks the traditional transitive pattern.

Fix options: (A) Remove "of" and use "comprise" correctly, or (B) replace the phrase with "is composed of," "consists of," "is made up of," "contains," or "includes."

Pattern: [whole] comprises [parts].
Bad pattern to avoid: [whole] is comprised of [parts].
Safe swaps: [whole] is composed of / consists of / is made up of / contains / includes [parts].

Wrong: The software is comprised of three modules.
Right: The software comprises three modules.

Real usage and tone: which fix to pick

Choose a replacement by audience and tone. "Comprise" (no "of") is formal and concise - common in technical specs. "Is composed of" is formal and safe. "Consists of" is neutral. "Is made up of" and "contains" read conversational or direct.

Comprise - best for formal, technical contexts (use without "of").
Is composed of - safe for academic and polished prose.
Consists of - neutral and widely accepted.
Is made up of / contains - good for casual writing or short, direct statements.

Technical: "The architecture comprises three layers."
Academic: "The study sample consists of 200 participants."
Casual: "My lunch is made up of leftovers and salad."

Examples: wrong/right pairs you can copy

Common sentences that contain "comprised of," followed by polished rewrites. Pick the rewrite that matches your tone.

Wrong: The team is comprised of talented individuals.
Right: The team comprises talented individuals. / The team is composed of talented individuals. / The team is made up of talented individuals.
Wrong: The book is comprised of three parts.
Right: The book consists of three parts. / The book is composed of three parts.
Wrong: The curriculum is comprised of ten lessons.
Right: The curriculum comprises ten lessons. / The curriculum is made up of ten lessons.
Wrong: The necklace is comprised of gold and diamonds.
Right: The necklace is made up of gold and diamonds. / The necklace contains gold and diamonds.
Wrong: The software package is comprised of several libraries.
Right: The software package consists of several libraries. / The software package comprises several libraries.
Wrong: The committee was comprised of volunteers and staff.
Right: The committee comprised volunteers and staff. / The committee was composed of volunteers and staff.

Work examples (emails, reports, proposals)

Work writing rewards clarity. Use "comprise" correctly in formal reports or choose a clearer swap in emails and proposals.

Work - Wrong (report): The dataset is comprised of anonymized survey entries and logs. Work - Right: The dataset consists of anonymized survey entries and logs.
Work - Wrong (email): Our new team is comprised of internal and external hires. Work - Right: Our new team is made up of internal and external hires.
Work - Wrong (proposal): The solution is comprised of three modules and a user interface. Work - Right: The solution consists of three modules and a user interface.

Try your own sentence

Test the whole sentence, not just the phrase. Context will usually reveal whether to drop "of," choose "consists of," or use "contains."

School and academic examples

Academic readers expect precision. Use "comprises" correctly when the whole is the subject; otherwise prefer "consists of" or "is composed of."

School - Wrong (lab): The mixture is comprised of water, ethanol, and sodium chloride. School - Right: The mixture consists of water, ethanol, and sodium chloride.
School - Wrong (essay): The novel is comprised of three interlocking narratives. School - Right: The novel is composed of three interlocking narratives.
School - Wrong (presentation): Our dataset is comprised of survey responses over five years. School - Right: Our dataset comprises survey responses collected over five years.

Casual examples (texts, posts, chats)

In casual writing you can keep a relaxed tone while avoiding the flagged phrase with "is made up of," "has," or "contains."

Casual - Wrong (text): The band is comprised of college friends. Casual - Right: The band is made up of college friends.
Casual - Wrong (post): My pantry is comprised of snacks and canned soup. Casual - Right: My pantry is full of snacks and canned soup. / My pantry has snacks and canned soup.
Casual - Wrong (chat): The playlist is comprised of 90s hits and new singles. Casual - Right: The playlist is made up of '90s hits and new singles.

Rewrite help: fast, copy-paste fixes

When you spot "comprised of," run this quick checklist and paste one of the canned rewrites.

Checklist: (1) Identify the whole and the parts. (2) Try: "[whole] comprises [parts]." (3) If that reads oddly, use: "[whole] is composed of / consists of / is made up of [parts]."
If you prefer an active verb other than "comprise," use "contains," "includes," or "has."
Read aloud to choose the option that matches document tone.

Rewrite:
Original: The committee is comprised of scientists and engineers. Fast fix 1: The committee comprises scientists and engineers. Fast fix 2: The committee consists of scientists and engineers.
Rewrite:
Original: The toolkit is comprised of utilities to check data quality. Fast fix: The toolkit is made up of utilities for checking data quality. / The toolkit contains utilities for checking data quality.
Rewrite:
Original: The package is comprised of documentation, code, and examples. Fast fix: The package contains documentation, code, and examples. / The package comprises documentation, code, and examples.

Memory trick, similar mistakes, hyphenation & spacing notes

Mnemonic: Picture the Whole swallowing the Parts - "Whole comprises Parts" (no "of"). If you hear yourself adding "of," swap to "is composed of" when rewriting.

Related confusions: "compose" vs. "comprise" (parts compose the whole; the whole comprises the parts) and "consist in" (meaning "lie in") vs. "consist of" (meaning "be made of").

Hyphenation/spacing: No special hyphenation rules. "Comprised of" is two words; use your normal spacing and comma rules when listing parts.

Mnemonic: Whole comprises Parts - no "of."
Watch: "compose" (parts → whole) vs. "comprise" (whole → parts).
Spacing: don't add hyphens; apply your usual comma/serial-comma rules when listing parts.

FAQ

Is "comprised of" always wrong?

No. Many readers accept it in speech or casual writing, but style guides and editors often label it nonstandard. For formal, academic, or edited work, use an accepted alternative.

Can I fix every instance automatically?

Find-and-replace will locate "comprised of," but don't blindly remove "of." For each hit, decide whether to (A) drop "of" (The whole comprises the parts), (B) replace with "is composed of/consists of/is made up of," or (C) rewrite with "contains/includes."

When should I use "comprise" instead of "consist of"?

Use "comprise" when the whole is clearly the subject and you want a concise, formal tone (e.g., technical specs). Use "consist of" for neutral academic or general-purpose writing.

Will changing "comprised of" alter meaning?

No. The suggested alternatives preserve meaning. Choose the one that matches formality and emphasis: "contains/includes" highlight presence; "consists of/is composed of" emphasize composition; "comprises" is concise.

Any quick proofreading habits to avoid this error?

Search drafts for "comprised" or "comprised of." When you find a hit, apply the checklist: identify whole/parts, try "comprises" correctly, or swap to a safe alternative. Style tools can flag occurrences and suggest rewrites.

Want quick help fixing a sentence?

Paste a sentence into a checker or ask a colleague to confirm whether to use "comprise" or another form. A tool that flags "comprised of" and offers context-appropriate rewrites saves time and reduces revision rounds.