WONDERFUL in Thesaurus: 1000+ Synonyms & Antonyms for WONDERFUL www.powerthesaurus.org/wonderfulPrivate View What's the definition of Wonderful in thesaurus? Most related words/phrases with sentence examples define Wonderful meaning and usage. Thesaurus for Wonderful. Related terms for wonderful- synonyms, antonyms and sentences with wonderful. Lists. synonyms. antonyms. definitions. sentences. thesaurus. Parts of speech. adjectives. interjections.