Wrong preposition: 'superior/inferior than' (superior/inferior to)

Short answer: Use to after superior and inferior. Don't add more-"more superior" and "more inferior" are redundant and nonstandard.

Quick answer

Use to after superior/inferior; use than with regular comparatives (bigger than, more useful than). Drop unnecessary "more".

Correct: The new feature is superior to the old one.
Incorrect: The new feature is superior than the old one.
Incorrect: The new feature is more superior than the old one.

Core explanation

Which preposition to use

Certain adjectives require to when they introduce the thing being compared. Superior and inferior are such adjectives: say "superior to" or "inferior to." By contrast, comparatives formed with -er or with more/less usually take than (bigger than, more useful than).

Why "more superior" is wrong

Superior already expresses a comparative relationship. Adding more is redundant and awkward. For emphasis or clarity, use a different construction: "far superior to," "clearly superior to," or "better than."

Grammar note

Think of two classes of comparisons:

Adjectives that govern to: superior to, inferior to, similar to, preferable to.
Comparatives that take than: taller than, more useful than, less expensive than.

Hyphenation and spacing

This issue usually doesn't involve hyphens. Watch instead for unnecessary words or misspacing when writers try to "fix" a sentence mid-draft. If you see both "more" and a comparative adjective, drop the redundancy.

Real usage (work, school, casual)

Work

Wrong: The new process is superior than the old workflow.
Right: The new process is superior to the old workflow.
Wrong: Our product is more superior than the competitor's.
Right: Our product is superior to the competitor's.
Wrong: That vendor's output was inferior than expected.
Right: That vendor's output was inferior to expectations.

School

Wrong: Her thesis is superior than his in clarity.
Right: Her thesis is superior to his in clarity.
Wrong: The second dataset is more inferior than the first.
Right: The second dataset is inferior to the first.
Wrong: This method seems more preferable than the old one.
Right: This method seems preferable to the old one.

Casual

Wrong: That coffee shop is superior than the one on Main.
Right: That coffee shop is superior to the one on Main.
Wrong: I'm more inferior than I feel after that workout.
Right: I feel inferior to how I felt last week.
Wrong: His game was more superior last night.
Right: His game was superior last night.

Wrong vs right examples you can copy

Six quick pairs to practice spotting and fixing the error.

Wrong: The new model is superior than the older one.
Right: The new model is superior to the older one.
Wrong: Her performance was inferior than her competitor's.
Right: Her performance was inferior to her competitor's.
Wrong: She is more superior than her teammates.
Right: She is superior to her teammates.
Wrong: The second movie is more inferior than the first one.
Right: The second movie is inferior to the first one.
Wrong: This solution is more preferable than the alternative.
Right: This solution is preferable to the alternative.
Wrong: Their results were superior than expected.
Right: Their results were superior to expectations.

How to fix your own sentence (rewrite help)

Don't blindly swap a word; check tone and flow after the fix. Use one of these quick approaches:

Replace than with to when the adjective governs to.
Remove redundant more before adjectives like superior or inferior.
When emphasis is needed, use modifiers (far, clearly) or rephrase with better than or a numeric comparison.

Rewrite 1: Original: This plan is superior than before. →
Rewrite: This plan is superior to the previous version.
Rewrite 2: Original: The assignment feels more inferior now. →
Rewrite: The assignment feels inferior now.
Rewrite 3: Original: Is that option more preferable this afternoon? →
Rewrite: Is that option preferable this afternoon?

Try your sentence

Paste a sentence into the checker to flag superior than, inferior than, and more superior errors. Then apply the three-step fix above: identify, replace, reread.

A simple memory trick

Associate each adjective with its usual companion: picture superior and inferior followed by the word to as a single block. If you hear than after those adjectives, treat it as a red flag and change it.

Visual: imagine "superior to" written as one unit.
Quick test: swap with "better/worse" - if "better than" fits, the original likely needs "to."
Bulk fix: search documents for "superior than," "inferior than," and "more superior."

Similar mistakes to watch for

Errors of spacing, hyphenation, and redundant modifiers often cluster. Scan nearby sentences for patterns you've already fixed.

Split words and unexpected spaces (e.g., write-ups vs write ups).
Redundant intensifiers (more unique, very unique).
Confused prepositions after adjectives (accept to vs accept of).
Misused comparatives (less better → worse).

FAQ

Can you say "superior than"?

No. Standard English uses superior to. Change than to to in writing.

Is "more superior" correct?

No. Superior already implies comparison. Use superior to, or rephrase with stronger modifiers or a different comparative (better than).

When should I use than and when should I use to?

Use than with -er comparatives and with more/less forms (bigger than, more useful than). Use to after adjectives that govern it (superior to, similar to, preferable to).

I hear native speakers say "superior than." Is that acceptable?

It appears in casual speech or dialects, but it's nonstandard in formal writing. Correct it in professional or academic contexts.

How can I quickly check documents for this mistake?

Search for strings like "superior than," "inferior than," and "more superior." Replace with to and remove redundant more, then skim the surrounding sentences for flow.

Need help fixing a sentence?

If you're unsure, paste the sentence into the checker above, or follow the quick checklist: identify the adjective, choose the correct preposition (to vs than), remove redundant modifiers, and reread for tone.