adjective
- in sufficient quantity; in generous amounts (usually used following the noun it modifies): He had troubles aplenty.
adverb
- sufficiently; enough; more than sparingly: He howled aplenty when hurt.
adjective, adverb (postpositive)
- in plenty
1830, originally U.S., from a- (1) + plenty (n.). First attested in writings of J. Fenimore Cooper.