not meant or adapted for a particular purpose; "a solvent unsuitable for use on wood surfaces"
inapplicable: not capable of being applied; "rules inapplicable to day students"
not conducive to good moral development; "the movie is unsuitable for children"
undesirable: not worthy of being chosen (especially as a spouse)
(unsuitableness) unsuitability: the quality of having the wrong properties for a specific purpose
(unsuitably) inappropriately: in an inappropriate manner; "he was inappropriately dressed"
(Unsuitability) Recommending investments that are clearly unsuitable for the client. Selling a variable annuity that won't mature until after a client's likely lifespan breaks rules regarding investment suitability