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chipper

[chip-er] / ˈtʃɪp ər /
ADJECTIVE
happy
Synonyms
STRONGEST
lively sprightly
WEAK
alert animate animated bright brisk gay in good spirits keen spirited vivacious
Antonyms
STRONGEST
inactive lethargic
WEAK
unhappy

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.