威勢 いせいよく
isei yoku

Adverb

1. with energy; vigorously; cheerfully; assertively; lustily

さあ、駆 けつけ さん はい、威勢 いせいよくぱっといきましょう。
sā kaketsuke sambai isē yoku patto ikimashō.
Anybody who shows up late has to chug!
Other forms: