Originally published on metropolis.co.jp on September 2010

えーんえーん
een, een
The loud crying of a child

おいおい
oi oi
Loud crying, mainly of a man

おぎゃあおぎゃあ
ogyaa, ogyaa
The crying of a baby

しくしく
shiku shiku
The quiet crying of a woman or child

めそめそ
meso meso
The whimpering of a crybaby

Source: Giongo/Gitaigo: A Practical Guide to Mimetic Expressions Through Pictures, by Akutsu Satoru (ALC Press Inc., 1994)