say it: uhn-SOO-tuh-buhl
unsuitable is an adjective meaning "not meant or adapted for a particular purpose". It carries 4 recorded senses.
not meant or adapted for a particular purpose
“a solvent unsuitable for use on wood surfaces”
not capable of being applied
“rules inapplicable to day students”
not conducive to good moral development
“the movie is unsuitable for children”
not worthy of being chosen (especially as a spouse)
Definitions, synonyms and semantic relations for unsuitable come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.