1
unwillingly;reluctantly;grudgingly
その命令に嫌々従う兵もいた。
Some soldiers were reluctant to obey the commands.
2
shaking one's head in refusal (like a child)
usu. as 〜(を)する
Other forms
嫌嫌 【いやいや】 · 厭々 【いやいや】 (rarely used kanji form) · 厭厭 【いやいや】 (rarely used kanji form)