どんと
donto

Adverb

1. powerfully; vigorously; with all one's strength

Onomatopoeia
わか とき ない、どんとやれ、男 おとこなーら、人 ひとのやれないことをやれ。
wakai tokiwa nido nai donto yare otokonāra hitono yarenai kotō yare.
You're only young once. Be a man and take on the world.
Adverb

2. lots of; heaps of; plenty

Onomatopoeia