ヘトヘト Common word LinksSentence search for ヘトヘトSentence search for へとへとEdit in JMdict Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no'1. completely exhausted; dead tired; knackeredOnomatopoeic or mimetic wordOther formsへとへと Discussions Log in to talk about this word.