Complement vs. Compliment
“Compliment” is praise or an expression of admiration. “Complement” is something that completes, matches, or improves another thing, and the verb means to combine well with it.
Use “compliment” for praise: “She complimented the design.” Use “complement” for completion or a good match: “The lighting complements the design.”
Key details
Choose the right form
| Meaning / situation | Form / construction | Decision |
|---|---|---|
| praise or admiration | compliment | Use the i-spelling. |
| complete, match, or enhance | complement | Use the e-spelling. |
| a grammatical completion term | complement | Use the grammatical term with e. |
Quick tests
Meaning / construction test
Does the sentence mean praise or admiration?
If yes: Use “compliment.”
If no: Use “complement” when the meaning is completion, a good match, enhancement, or the grammatical term.
Caveat: Choose by the documented meaning or construction; a different pattern may be valid in a different sentence structure.
Examples
The editor complimented the designer on the layout.
The verb means praised.
The soft lighting complements the room.
The verb means combines well with or enhances.
The clause contains a subject complement.
The grammatical term is “complement.”
Further guidance
Core difference
Cambridge explicitly warns not to confuse the two. Compliments are about praise; complements are about completion or compatibility.
Fast Test
If you could replace the word with “praise,” choose compliment. If “complete,” “match,” or “enhance” fits, choose complement.
Memory Cue
Complement shares the opening “comple-” with “complete,” which matches its completion/enhancement meaning.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Complement — Cambridge Dictionary (opens in a new tab)Cambridge University Press · Complement verb, noun, and grammar meanings
- Compliment — Cambridge Dictionary (opens in a new tab)Cambridge University Press · Compliment noun and verb meanings