noun
split infinitive
Linguistics term referring to an infinitive with an adverb inserted between 'to' and the verb, as in 'to boldly go'.
英語の「to boldly go」は分離不定詞の有名な例だ。
English 'to boldly go' is a famous example of a split infinitive.
Compound of 分離 (separation) + 不定詞 (infinitive), a calque of English 'split infinitive'.