Likest
Likest is a word that appears in older forms of English, specifically in Middle English and Early Modern English. It is the superlative form of the adjective "like," meaning most like or most similar. For example, one might say "This is the likest thing I have ever seen to my old house" to express that something strongly resembles their old house.
The word "likest" is rarely used in modern English, having been largely replaced by "most like" or