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rough; wild; violent; rude; coarse; harsh; fierce; heavy (e.g. breathing)
immoderate; extravagant; reckless
今日は波が荒いので海に入るのは危険だと思う。
The waves are rough today, so I think it's dangerous to enter the sea.
昨日の海は波が荒かったので泳げなかった。
The waves were rough yesterday, so we couldn't swim.
今日は波が荒くないから海水浴に行こう。
The waves aren't rough today, so let's go swimming.