Missing hyphen in 'second largest'

Missing hyphens in compound modifiers (like second-largest) can slow readers or change meaning. Focus: ordinal + adjective compounds (second-largest, third-highest) - the same checks work for long-term, high-quality, and other compound modifiers.

Quick answer: hyphenate ordinal + adjective before a noun

Hyphenate when an ordinal + adjective directly modifies a noun: write "the second-largest city." If the phrase follows the noun as a predicate, you usually don't hyphenate: "The city is the second largest." When meaning is unclear, hyphenate or rewrite.

Before a noun = hyphenate (the second-largest museum).
After a noun (predicate) = usually no hyphen (the museum is the second largest).
If ambiguity remains, hyphenate or rephrase to make the relationship clear.

Core rule: hyphenate compound modifiers before nouns

When two or more words act together as a single adjective before a noun, link them with a hyphen so readers treat them as one unit.

When the same words follow the noun as a predicate, the structure already separates them, so the hyphen is often unnecessary.

Compound modifier before a noun → hyphen (the second-largest city).
Same words after a noun → usually no hyphen (the city is the second largest).
Exception: adverbs ending in -ly don't take hyphens (a highly regarded scientist).

Wrong: He owns the second largest car collection in the world.
Right: He owns the second-largest car collection in the world.
Wrong: Her paper was the third best in the class.
Right: Her paper was the third-best in the class.

Spacing and dash types: use the hyphen, not a spaced dash

Use the hyphen (-) with no spaces for compound modifiers: second-largest. Do not put spaces around hyphens.

En dashes (-) mark ranges (1999-2003) or complex relationships; em dashes (-) separate clauses. Neither replaces a hyphen in compound modifiers.

Correct: second-largest (hyphen, no spaces).
Wrong: second - largest (spaced dash) or second - largest (em dash).
En dash: 2005-2010 (range). Em dash: clause breaks - like this.

Usage: Wrong: the second - largest collection.
Right: the second-largest collection.
Note: Some style guides prefer an en dash for certain complex compounds, but not for simple ordinal+adjective modifiers.

Real usage and style: when to be strict vs. relaxed

Be conservative in formal writing (academic papers, reports, grant applications): hyphenate ordinal+adjective modifiers before nouns for clarity. Casual writing and some newsroom styles sometimes drop hyphens, but consistency matters.

Academic/business: hyphenate for precision and to meet style guides.
Newsroom/casual: check publication style; some drop hyphens for speed.
Always pick one approach and apply it across a document.

Work - Wrong: Our division reported the second largest gain this quarter.
Work - Right: Our division reported the second-largest gain this quarter.
School - Wrong: She's the second best student in the class.
School - Right: She's the second-best student in the class.

Examples you can copy: work, school, and casual

Below are practical sentence templates. Each wrong form is followed by a corrected sentence; where helpful, an alternate rewrite avoids hyphenation.

Copy the corrected forms into drafts or use the rewrites if you prefer no hyphens.
These cover emails, reports, essays, and messages.

Work - Wrong: Our second largest client requested updated terms.
Work - Right: Our second-largest client requested updated terms.
Work - Wrong: The third highest performing team will present next week.
Work - Right: The third-highest-performing team will present next week.
Work - Rewrite: The team with the third-highest performance will present next week.
School - Wrong: He finished as the fifth best student in the cohort.
School - Right: He finished as the fifth-best student in the cohort.
School - Wrong: This is the second largest study on the topic.
School - Right: This is the second-largest study on the topic.
Casual - Wrong: She's the second best singer I've ever heard.
Casual - Right: She's the second-best singer I've ever heard.
Casual - Wrong: They ran the second fastest race in club history.
Casual - Right: They ran the second-fastest race in club history.

Try your own sentence

Test the whole sentence rather than the phrase alone: context usually makes the best choice clear.

Fix your sentence: three-step checklist + rewrites

Checklist: 1) Is an ordinal next to an adjective before a noun? 2) Do those words form one idea describing the noun? 3) If yes, hyphenate; if it reads awkwardly, move the modifier after the noun or rephrase.

Step 1: Find ordinal+adjective before a noun (first, second, third...).
Step 2: If they act as a single idea → hyphenate.
Step 3: If hyphenation feels clunky, rewrite: move the modifier after the noun or use "ranked second" phrasing.

Wrong: The team delivered the second largest presentation of the season.
Right: The team delivered the second-largest presentation of the season.
Wrong: She's our second best developer.
Rewrite: a) Hyphenate: She's our second-best developer. b) Move it: Our developer ranked second on the team. c) Rephrase: She is the team's second-highest-rated developer.
Wrong: This is the second largest sample used.
Rewrite: a) Hyphenate: This is the second-largest sample used. b) Move it: The sample is the second largest used in the study. c) Rephrase: This sample ranks second in size.

Memory trick: three quick proofreading tests

When you only have a second, use these tests.

Before-noun test: If the phrase is before a noun and acts as one idea → hyphenate.
Move-it-after test: Move the words after the noun. If it reads clearly, you can drop the hyphen when they are post-nominal.
Say-it-together test: If you say the ordinal and adjective as one beat (second-largest), use a hyphen.

Tip: If "the second-largest city" feels like one unit aloud, hyphenate.

Similar mistakes and grammar traps (grammar section)

Many hyphen errors come from not deciding whether multiple words form a single modifier. Watch these cases.

Hyphenate before nouns: first-class student, long-term plan, high-quality materials.
Do not hyphenate adverb + adjective where the adverb ends in -ly: a highly regarded scientist.
Compound nouns and spellings change over time: e-mail vs email - follow your dictionary or style guide.

Wrong: a well known author
Right: a well-known author
Wrong: a highly-regarded scientist
Right: a highly regarded scientist
Wrong: long term contract
Right: long-term contract

Final editing checklist: catch missing hyphens fast

Before you send or publish, run this mini-check: find ordinal+adjective pairs, check spacing, and decide whether to hyphenate or rephrase.

Scan for ordinals (first, second, third...) next to adjectives before nouns.
Ensure no spaces around hyphens and that you didn't use an en or em dash by mistake.
When meaning is ambiguous, hyphenate or rewrite (move modifier after noun or use "ranked second").

Example: Change "second largest" to "second-largest" before a noun; if awkward, write "ranked second" instead.

FAQ

Should I always hyphenate "second-largest"?

No. Hyphenate when the phrase precedes the noun it modifies (the second-largest city). When it follows the noun as a predicate, you usually don't hyphenate (the city is the second largest). If clarity is a concern, hyphenate or rephrase.

Can I avoid hyphens by moving the words after the noun?

Yes. Moving the modifier after the noun or rephrasing (for example, "the study ranks second in size") removes the need for hyphenation and often improves flow.

Do adverbs like "highly" need hyphens?

No. Adverbs ending in -ly do not take hyphens before adjectives: "a highly regarded scientist" (no hyphen).

What about numbers and hyphens (e.g., twenty one vs twenty-one)?

Spelled-out compound numbers between twenty-one and ninety-nine take hyphens (twenty-one). That rule is separate but related; follow your style guide for consistency.

My style guide is inconsistent - what should I do?

Pick a clear rule for your document (recommended: hyphenate ordinal+adjective before nouns) and apply it consistently. For high-stakes writing, follow the publication's guide (Chicago, APA, AP).

Quick check: paste a sentence to confirm

When in doubt, paste your sentence into a grammar checker that highlights missing hyphens and suggests rewrites you can copy. Otherwise, use the three-step checklist and the rewrite patterns above.