Unsuitable For: Standard Pattern
Unsuitable For: Standard Pattern records a directly documented English construction and keeps guidance bounded to the evidenced pattern rather than turning one attested complement into a universal prohibition.
Use “unsuitable for” before the person, purpose, situation, or use for which something is not right or acceptable.
Key details
Choose the right form
| Context | Use | Decision |
|---|---|---|
| not right for a person, purpose, situation, or use | unsuitable for | Use “for” before the intended user, purpose, or context. |
| adjective directly modifies a noun | unsuitable + noun | No complement is needed. |
| different relation is intended | check context | Do not force “for” into every use of “unsuitable.” |
Quick tests
Purpose-or-user test
Are you naming the person, purpose, situation, or use for which something is not appropriate?
If yes: Use “unsuitable for + complement.”
If no: If the adjective simply modifies a noun or stands alone, no “for” complement is required.
Caveat: The source directly attests “unsuitable for” but does not make it an exhaustive complement rule.
Examples
This software is unsuitable for beginners.
The complement names the users for whom the software is not appropriate.
The room is unsuitable for large meetings.
“For” introduces the intended use.
They rejected the unsuitable material.
The adjective directly modifies the noun without a complement.
Further guidance
Construction
Use “unsuitable for” before the person, purpose, situation, or use for which something is not right or acceptable.
Style Boundary
Cambridge directly attests “unsuitable for”; the guide does not turn that evidence into a universal rule for every use of “unsuitable”.
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.
- Unsuitable — Cambridge Dictionary (opens in a new tab)Cambridge University Press · Direct learner-dictionary evidence for “unsuitable for” before a person, purpose, situation, or use.