overexuberant
adjective
over·ex·u·ber·ant ˌō-vər-ig-ˈzü-b(ə-)rənt 
: exuberant to an excessive degree
overexuberant fans
… the 24-year-old shortstop with the engaging smile and the overexuberant celebrations on the field …
Ben Shpigel
Ben Shpigel overexuberantly adverb
… a journey there that featured sharing a plane with soldiers overexuberantly celebrating their return from Iraq. Vahe Gregorian
Vahe Gregorian 
Word History
First Known Use
1821, in the meaning defined above
overexuberant
adjective
as in boisterous
Synonyms & Similar Words
Relevance
- boisterous
- silly
- rowdy
- raucous
- giddy
- euphoric
- ecstatic
- rapturous
- joyful
- rollicking
- brazen
- exuberant
- insouciant
- carefree
- lighthearted
- impudent
- saucy
- light-headed
- uninhibited
- lyric
- insolent
- impertinent
- brash
- sprightly
- outgoing
- audacious
- lively
- extroverted
- effervescent
- happy-go-lucky
- bubbly
- buoyant
- frolic
- vivacious
- bouncy
- bold
- gamesome
- frolicsome
- high-spirited
- extraverted
- crank
- gay
Antonyms & Near Antonyms
- restrained
- sullen
- subdued
- inhibited
- phlegmatic
- stoic
- repressed
- stoical
- constrained
- low-spirited
- surly
- morose
- depressed
- dour
- stolid
- impassive
- glum