No. A litotes ( notice the s there) is a figure of speech using a negated opposite to affirm something, for example "Being short and fat is no small problem for a prospective high-jumper."
Phrase is an expression consisting of one or more words forming a grammatical constituent of a sentence. Adjective Phrase Adverb Phrase Catchphrase Noun Phrase Participial Phrase Phrasal Verb...
if a phrase begins with "to" then it is an infinitive. an infinitive is a verbal. they may be used as nouns, adjectives, or adverbs. an infinitive is formed by adding "to". an infinitive phrase...