suit ‧ a ‧ bil ‧ i ‧ ty /ˌsuːtəˈbɪləti, ˌsuːtəˈbɪlɪti, ˌsjuː- $ ˌsuː-/ BrE AmE noun [uncountable]
the degree to which something or someone has the right qualities for a particular purpose
suitability for
There’s no doubt about Christine’s suitability for the job.
suitability as
his suitability as a father