adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'
pliantly; flexibly; bending easily
Describes something soft and easily bent, like a thin metal sheet or a weak structure. Often used with 曲がる or へこむ.
このアルミ板はヘコヘコと曲がる。
This aluminum sheet bends pliantly.
おもちゃの刀はヘコヘコしていて
The toy sword is flimsy and bends right away.
adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'
subserviently; ingratiatingly; servilely
Describes a person's overly humble or fawning behavior, often with bowing or excessive politeness. Carries a negative nuance of groveling.
彼は上司にヘコヘコと頭を下げた。
He bowed subserviently to his boss.
あの営業マンはいつもヘコヘコしていて、見ていて気の毒だ。
That salesman is always ingratiating; it's pitiful to watch.