noun or participle which takes 'suru', intransitive verb, adverb
itch; feel itchy; feel creepy
Describes a physical itching sensation or a creepy, crawly feeling on the skin. Often used with する.
虫に刺されたところがムズムズする。
The place where I was bitten by a bug itches.
背中
My back felt so itchy I couldn't help scratching it.
noun or participle which takes 'suru', intransitive verb, adverb
be impatient; itch to do; be eager
Expresses a restless, fidgety urge to do something, like an emotional itch. Often used with ～たくて or ～したくて.
早く試合に出たくてムズムズしている。
I'm itching to get into the game soon.
彼は何か言いたそうにむずむずしていた。
He was fidgeting as if he wanted to say something.