What is a grammatical terminology to describe the group of the refrain of two syllable words like pera-pera, don-don, iki-iki?


Japanese language have a special group of words which repeat mostly two
syllable word like pera pera, para para, jito jito, suku suku, aka aka, zuki
zuki – you can name it, that are used adverbially.

They look like onomatopoeias, but they are not. They don’t reflect any sound,
and they are all used adverbially, not as interjection.

I am curious to know what is a grammatical terminology in both Japanese and
English to call such a group of words. Would you please teach me?




擬声語{ぎせいご}・擬音語{ぎおんご} and 擬態語{ぎたいご}・擬情語{ぎじょうご}  
In general: Onomatopoeia (Ideophone).  
Specifically, in order, words that mimic: voices, sounds, states, and
feelings.

[See the wiki
article](https://en.wikipedia.org/wiki/Japanese_sound_symbolism).

