ぺこぺこ

ぺこぺこ
adverb
starving; bowing repeatedly
descriptive
1. starving; very hungry
Describes the feeling of being extremely hungry, with an empty stomach.
(なか)ぺこぺこだ。
I'm starving.
I'm really hungry because I skipped lunch.
I haven't eaten anything since this morning, so I'm starving.
I exercised a lot, so I'm so hungry I could eat anything.
The children came home from school saying 'we're starving,' so I immediately put out snacks.
2. bowing repeatedly; being obsequious
Describes the action of bowing repeatedly, often in an excessively flattering manner.
To bow repeatedly to one's boss.
Often implies excessive or insincere flattery
That person is always being obsequious.
Bowing to customers is part of the job.
They bow obsequiously to important people, but act arrogant toward juniors.
When apologizing, I bowed repeatedly and was forgiven by the other person.

ぺこぺこ is a mimetic word (擬態語(ぎたいご)) with two unrelated meanings.

SENSE 1 — HUNGRY:

  • (なか)ぺこぺこ: I'm starving
  • Casual and friendly. Common among children and in everyday speech.
  • Mimics the feeling of an empty, hollow stomach.

SENSE 2 — BOWING:

  • ぺこぺこ(あたま)()げる: to bow repeatedly
  • ぺこぺこする: to act obsequiously, to grovel
  • Often has a negative nuance, implying excessive flattery or servility.
  • Mimics the repeated up-and-down motion of bowing.

Register

Both senses are informal/colloquial. The hungry sense is particularly common in spoken Japanese.