一向に|いっこうにikkouni[0]heiban (flat)

1. adverbcompletely; absolutely; totally
2. adverb(not) at all; (not) a bit; (not) in the leastin a negative sentence
   彼かれの言いうことは僕ぼくには一向いっこうにわからない。↗

   I can make nothing of what he says.

   健康けんこうのせいで仕事しごとがいっこうにはかどらない。↗

   My health makes me a very slow worker.
3. adverbearnestly; intently; determinedly

• SynonymちっともCasualColloquial adverb used with a negative for 'not at all', as in 「ちっとも分からない」; 「一向に」 is more written in tone and leans toward a situation making no progress.
• SynonymさっぱりCasualColloquial adverb; with a negative it means 'not at all', as in 「さっぱり分からない」, and on its own it means feeling refreshed. 「一向に」 stresses a lack of progress.
• Synonym少しもすこしもNeutralNeutral adverb with a negative for 'not in the least'; it covers both degree and quantity in a plain tone. 「一向に」 leans toward an expected change being slow to arrive.
• SynonymてんでCasualColloquial adverb meaning 'not at all' or, in another use, 'extremely', as in 「てんで駄目」. 「一向に」 centres on a situation making no progress.
• Synonym毫もごうもWrittenWritten adverb used with a negative for 'not in the least', as in 「毫も疑わない」. 「一向に」 is the more common choice.
• SynonymつゆいささかもWrittenWritten adverb that strengthens a negative to 'by no means, not in the least'. 「一向に」 is the more common, everyday choice.
• Related一つもひとつもNeutralNeutral adverb used with a negative for 'not a single one', leaning toward quantity. 「一向に」 is about degree and progress.
• RelatedさらさらNeutralNeutral adverb; with a negative it flatly denies a feeling or intent, as in 「その気はさらさらない」; common in daily speech too. 「一向に」 stresses lack of progress.
• RelatedからっきしCasualColloquial adverb; with a negative it means 'utterly no good', as in 「からっきし駄目」. 「一向に」 is about progress stalling.
• Antonym大いにおおいにNeutralNeutral adverb meaning 'greatly, very much', as in 「大いに笑う」. It sits at the opposite end of the degree scale from the negative 「一向に」.
• Antonym非常によくNeutralMeans doing something very well, as in 「非常によく歌う」 or 「非常によくできた」. It contrasts with the negative 「一向に」 in degree.

Use 「一向に」 with a negative when an expected change shows no progress, as in 「一向に良くならない」; it also appears in 「一向に構わない」. For plain 'not at all' pick 「ちっとも」 or 「少しも」; for 'completely not' pick 「さっぱり」. 「大いに」 is the opposite.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 完全かんぜんに、全まったく。物事ものごとが徹底的てっていてきである様子ようす。
2. 少すこしも、ちっとも。通常つうじょうは否定文ひていぶんで、ほとんど効果こうかがない様子ようす。
3. 一筋ひとすじに、ひたすら。強つよい意志いしや決心けっしんを持もって行動こうどうする様子ようす。