'Unsuitable' definitions:

Definition of 'unsuitable'

From: WordNet
adjective
Not meant or adapted for a particular purpose; "a solvent unsuitable for use on wood surfaces"
adjective
Not capable of being applied; "rules inapplicable to day students" [syn: inapplicable, unsuitable]
adjective
Not conducive to good moral development; "the movie is unsuitable for children"
adjective
Not worthy of being chosen (especially as a spouse) [syn: undesirable, unsuitable]

Definition of 'Unsuitable'

From: GCIDE

Synonyms of 'unsuitable'

From: Moby Thesaurus