adverb taking the 'to' particle, noun or participle which takes 'suru', intransitive verb
hesitantly; falteringly; mumblingly
Describes speaking in a hesitant, unclear, or mumbling manner, often due to embarrassment, nervousness, or lack of confidence. Internet slang, derived from the verb もにょる.
See also: もにょる
When asked, he answered hesitantly, mumbling.
緊張して、もにょもにょしてしまった。
I got nervous and ended up mumbling.