たけなわだったら
酣だったら
takenawadattara

Noun
Da Copula
na-Adjective

The "-tara" conditional form ("if/when…") of たけなわ

1. If/when drunk; If/when lively/boisterous; If/when engrossed/intoxicated (with something)

Tara Conditional
Usually Written in Kana