adj. hap·pi·er, hap·pi·est
1. Enjoying, showing, or marked by pleasure, satisfaction, or joy. See Synonyms at glad.
2. Cheerful; willing: happy to help.
3. Characterized by good luck. See Synonyms at fortunate.
4. Being especially well-adapted; felicitous: a happy turn of phrase.
a. Characterized by a spontaneous or obsessive inclination to use something. Often used in combination: trigger-happy.
b. Enthusiastic about or involved with to a disproportionate degree. Often used in combination: money-happy; clothes-happy.
[Middle English, from hap, luck; see HAP.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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