Leastrecently
Leastrecently is an English word formed by combining least and recently. It is not widely recognized as a standard entry in major dictionaries, and its use is uncommon. When it does appear, it is typically meant to convey the idea of something occurring with the greatest lapse of time since a prior event.
Usage and form: In standard English, the conventional construction is two words: least recently. For example,
Parts of speech and interpretation: Leastrecently can function as an adverb modifying a verb or a participle,
Relation to computing: In computing, the related and widely used term is least recently used (LRU), a
Etymology and status: The word is a neologism or nonce formation rather than a stable lexical item.