Neutral adj.. 1 The immature fruit. Synonyms: advance, premature. Antonyms: mature, green. 2 Person at tender age manifesting physical development, moral or intellectual whose disclosure is usually delayed. Synonyms: advance, outdone, Prodigy, talented. Diction is derived from the Latin 'praecox, praecócis': composed of the prefix «HIRC»: before, and by the verb «cóquere»: cooking, mature.