From non- + sufficient. Rhymes: -ɪʃənt nonsufficient (not comparable) insufficient...
From non- + sufficient + -ly. nonsufficiently (not comparable) To a degree that is not sufficient....
National Science Foundation. NSF pl (plural only) (banking) Initialism of nonsufficient funds: the alert generated by a bounced check or an ACH transaction...
I consider him still to be a very sufficient merchant. insufficient nonsufficient unsufficient (uncommon) sufficient unto the day is the evil thereof...