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hazy; misty; foggy; murky; fuzzy
hazy feeling; uncertain feeling; feeling gloomy; feeling depressed; pent-up feelings; ill feeling
もやもやした気持ちが晴れない。
This fuzzy feeling won't go away.
心の中がもやもやする。
I have an uneasy feeling inside.
頭がもやもやして集中できない。
My head is foggy and I can't focus.