殊に・異に|ことにkotoni[1]atamadaka (head-high)

1. adverbespecially; particularly; unusually; above all
2. adverbadditionally

• SynonymとりわけNeutralAdverb meaning especially (「とりわけ寒い日」); works in both speech and writing, while 「殊に」 leans written and sounds more formal.
• Synonym格別かくべつNeutralAdjectival noun for exceptional, out of the ordinary, as 「格別の配慮」「風呂上がりのビールは格別だ」; common in everyday judgements too, while 「殊に」 leans written.
• SynonymとびきりCasualColloquial adverb for outstanding, exceptionally good (「とびきりの笑顔」).
• Synonym特にとくにNeutralAdverb meaning particularly (「特に問題はない」); the most all-purpose of the group.
• Synonym特別とくべつNeutralAdjectival noun meaning special (「特別な日」); stresses being different from the ordinary.
• Synonym中にもなかにもNeutralSet phrase for especially among others (「中にも彼は」); somewhat old-fashioned.
• Synonym中でもなかでもNeutralSet phrase for especially among many (「中でも彼が一番」); common in speech.
• SynonymわけてWrittenAdverb for especially, exceptionally; old-fashioned and rare, as in 「わけて今年は寒い」. 「殊に」 is the more common choice.
• SynonymひときわNeutralAdverb meaning strikingly (「ひときわ目立つ」); stresses standing out from among many.
• SynonymなかんずくWrittenAdverb for above all, especially; written/formal prose, seen mostly in academic papers and classical texts.
• Synonym別してべっしてWrittenAdverb for especially; written/formal prose and rare.
• SynonymひとしおNeutralAdverb for all the more (「喜びもひとしお」); used chiefly of feelings.
• SynonymことのほかNeutralAdverb for unexpectedly, exceptionally (「殊の外喜ぶ」); carries a nuance of surprise.
• SynonymわけてもWrittenAdverb for especially, above all (「わけても彼は」); written/formal prose.
• Related格段かくだんNeutralAdjectival noun for a marked gap in degree, as 「格段に進歩した」「格段の差」; 「殊に」 is an adverb singling out one among many.
• Related一段いちだんNeutralAdverb for even more (「一段と寒くなる」); usually in the form 「一段と」.
• Related人一倍ひといちばいNeutralNoun meaning more than others (「人一倍努力する」); compares one's degree with other people's.
• Related至極しごくWrittenAdverb for extremely, quite (「至極当然」); written/formal prose.
• Related何はさておきなにはさておきNeutralSet phrase for before anything else (「何はさておき食事だ」); stresses putting one thing first.

In writing, use 「殊に」 for especially or exceptionally: 「殊に優れている」「今年は殊に暑い」. In speech prefer 「特に」 or 「とりわけ」; to single one out from many use 「ひときわ」, and for a surprisingly strong degree 「殊の外」.

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

1. とりわけ。特段とくだん。
2. なお。その上うえ。