be chafing at the bit(chafe)
SMART Vocabulary: related words and phrases Excited, interested and enthusiastic
abubble
aflutter
agog
all of a flutteridiom
amped
entranced
evangelical
evangelistic
evangelistically
excited
go ahead
make (all) the right, correct, etc. noisesidiom
mood
nuts
omnivorous
omnivorously
zealous
zealously
zestful
zestfully
So he champed at the bit, in the grip of an intense homesickness that could be cured only by our escape.