IPA: /ˌsuːtəˈbɪləti/
KK: /ˈsutəˌbɪləti/
The quality of being appropriate or fitting for a particular purpose or situation.
The suitability of the candidate for the job was evident during the interview.
Suitability → It is formed from "suit" (from Old French *suiter*, meaning to follow or to be appropriate) and "-ability" (from Latin *abilitas*, meaning capability or quality). The word "suitability" refers to the quality of being appropriate or fitting for a particular purpose.
Think of something being 'appropriate' ('suit') and having the 'quality' ('-ability') to fit a specific need — that's what suitability means.