An alternative word is a word or phrase that has the same meaning as another word or phrase. Oleo, Synonym, RATHER, and ELSE are all alternative words. Oleo is a four letter word meaning margarine or butter substitute. Synonym is a seven letter word meaning a word having the same or nearly the same meaning as another word in the same language. RATHER is a six letter word meaning to some extent or degree. ELSE is a four letter word meaning other than what has been mentioned.