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easy; simple; plain
「易易」 has another reading with different meanings.
easily; readily; with ease; without trouble
易易いいとできる問題もんだいではない。
It's not an easy problem.
易易いいと手てに入らはいらないよ。
It's not easily obtained.
易易いいとは言えいえない状況じょうきょうだ。
It's a difficult situation.