na-adjective
very hungry; starving; famished
Onomatopoeic expression for an empty, growling stomach or intense hunger. Often used with お腹が.
お腹がぺこぺこだ。
I'm starving.
昼ごはんを抜いたから、もうぺこぺこだよ。
I skipped lunch, so I'm really hungry now.
adverb, noun or participle which takes 'suru'
bowing repeatedly; kowtowing; being obsequious
Describes repeatedly lowering the head in apology or flattery. Often used with 頭を下げる or 謝る, implying servile behavior.
彼は上司にぺこぺこ謝っていた。
He was bowing and scraping to his boss in apology.
あの政治家はいつもスポンサーにぺこぺこしている。
That politician is always kowtowing to his sponsors.
adverb, adverb taking the 'to' particle, noun or participle which takes 'suru', na-adjective
Describes a thin or weak object bending or caving in under pressure. Can be used literally for materials or figuratively for a person yielding.
空き缶がぺこぺこにへこんだ。
The empty can got dented and crumpled.
薄い板は踏むとぺこぺこする。
The thin board buckles when you step on it.