longest is a form of:

Corinthian



ENGLISH MEANING
noun
1.
A native or inhabitant of Corinth.
2.
A gay, licentious person.
3.
A man of fashion given to pleasuring or sport; a fashionable man about town; esp., a man of means who drives his own horse, sails his own yacht, or the like.
adjective
1.
Of or relating to Corinth.
2.
Of or pertaining to the Corinthian order of architecture, invented by the Greeks, but more commonly used by the Romans.
3.
Of or pertaining to an amateur sailor or yachtsman; as, a corinthian race (one in which the contesting yachts must be manned by amateurs.)
4.
Debauched in character or practice; impure.