adverb taking the 'to' particle, taru-adjective
with a chopping sound; with a thump
Mimetic word describing the sound of chopping with an axe or hammering a post into the ground. Used adverbially with と.
きこりが木を丁々と切っている。
The woodcutter is chopping the tree with a thwack.
大工が柱を丁々と打ち込んだ。
The carpenter hammered the post into the ground with a thump.