はぁ

From Wiktionary, the free dictionary

Japanese

For pronunciation and definitions of はぁ – see the following entry.
はあ
[interjection] mhm; yes (used to express polite agreement)
[interjection] um; uh (used to express thought, confusion, or uncertainty)
[interjection] huh? hmm? what?! (used to forcefully call attention to something)
[interjection] oops (used in response to a failure or mistake)
[interjection] ha! (expression of loud laughter)
[interjection] A sigh.
[interjection] (pornographic manga) The sound of heavy breathing when sexually aroused.
Alternative spellings
はー, は〜, ハア, ハァ, ハー, ハ〜
(This term, はぁ (), is the hiragana spelling of the above term.)

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