unsuitable

adjective

un·​suit·​able ˌən-ˈsü-tə-bəl 

: not fitting or right for a use or purpose : not suitable

an unsuitable choice

unsuitable topics for conversation

unsuitability

ˌən-ˌsü-tə-ˈbi-lə-tē 

noun

unsuitability for the job

unsuitably

ˌən-ˈsü-tə-blē 

adverb

unsuitably dressed

Synonyms of unsuitable

• inappropriate
• improper
• wrong
• incorrect
• unfit
• unhappy

Examples of unsuitable in a Sentence

all the movies playing now are violent or otherwise unsuitable for a child's birthday party

Recent Examples on the Web

Nelly Korda won for the first time in 14 months without having to hit a shot Sunday when the LPGA Tour reduced the season-opening Tournament of Champions to 54 holes because of wind and cold that led officials to deem Lake Nona unsuitable for a final round. —Arkansas Online, 2 Feb. 2026

There are significant worries that AI can readily go off the rails or otherwise dispense unsuitable or even egregiously inappropriate mental health advice. —Lance Eliot, Forbes.com, 30 Jan. 2026

These turbines operate effectively in regions unsuitable for conventional wind farms, including mountainous terrain and remote coastal areas. —Atharva Gosavi, Interesting Engineering, 14 Jan. 2026

When Guinane applied for her own LTC, the chief found her unsuitable because of his concern that her husband would have access to the weapons. —Rick Sobey, Boston Herald, 12 Jan. 2026

Word History

First Known Use

circa 1586, in the meaning defined above

Rhymes for unsuitable

• mutable
• suitable
• computable
• disputable
• immutable
• imputable
• inscrutable
• executable
• indisputable
• irrefutable
• substitutable

Kids Definition

unsuitable

adjective

un·​suit·​able

ˌən-ˈsüt-ə-bəl, 

ˈən-

: not suitable or fitting : unbecoming, inappropriate

unsuitably

-blē

adverb