Translation guide
The English adverb 'bitterly' is used in several distinct ways: to describe intense negative emotions like resentment or disappointment, to describe extreme cold, and in a few fixed phrases. Japanese expresses these meanings with different adverbs and constructions, not a single direct equivalent.
Expressing strong feelings of bitterness, resentment, or speaking in an angry, acrimonious way.
Adverbial form of 恨みがましい, meaning 'in a resentful manner'. Used when someone speaks or acts with lingering bitterness or grudge.
彼は恨みがましく過去のことを話した。
He spoke bitterly about the past.
Means 'sharply, caustically'. Used for bitter criticism or remarks.
彼女は辛辣に彼の提案を批判した。
She bitterly criticized his proposal.
From 苦々しい, meaning 'disgusted, bitter'. Describes a feeling of bitter displeasure or resentment.
彼は苦々しくその知らせを聞いた。
He listened to the news bitterly.
Literally 'with frustration seeping out'. Used when someone's words or tone reveal bitter regret or chagrin.
彼は悔しさをにじませて敗北を認めた。
He bitterly admitted defeat.
Expressing deep disappointment, grief, or regret, often with tears or crying.
A general intensifier meaning 'terribly, awfully'. Commonly used with verbs like 泣く (cry) or 失望する (be disappointed) to convey 'bitterly'.
彼女はひどく泣いた。
She cried bitterly.
彼はひどく失望した。
He was bitterly disappointed.
Means 'keenly, acutely'. Used for feeling regret or loss deeply.
彼は自分の過ちを痛切に後悔した。
He bitterly regretted his mistake.
Literally 'soaking into one's body', meaning 'deeply, keenly'. Often used with 感じる or 悟る.
彼は孤独を身にしみて感じた。
He felt bitterly lonely.
Describing weather or temperature that is painfully or intensely cold.
Idiomatic phrase meaning 'as if cutting the body', used for bitterly cold wind or air.
身を切るように寒い朝だった。
It was a bitterly cold morning.
Means 'severe, harsh'. Commonly used for cold weather: 厳しい寒さ (bitter cold).
厳しい寒さが続いている。
The bitter cold continues.
Means 'piercing, stinging'. Used for cold that feels sharp on the skin.
刺すような寒風が吹いていた。
A bitterly cold wind was blowing.
Expressing strong opposition or resistance.
Standard phrase meaning 'to oppose fiercely'. 激しく (fiercely) + 反対する (oppose).
彼らはその計画に激しく反対した。
They were bitterly opposed to the plan.
Means 'to oppose resolutely'. More formal and emphatic.
組合は断固として反対した。
The union was bitterly opposed.
There is no adverb that covers all uses of 'bitterly'. Translating it as 苦く (にがく) would only mean 'bitterly' in the sense of taste, not emotion or cold.
ひどく is more about emotional intensity (crying, disappointment), while 激しく is about forceful action or opposition. For 'bitterly cold', use specific cold-related phrases.