based verb adjective Stress: first syllable ๐ค Save Syllables: based (1) English Definition Having as a foundation or starting point. Example Sentence The movie is based on a true story. US IPA /beษชst/ ๐ Listen US UK IPA /beษชst/ ๐ Listen UK Synonyms founded grounded rooted established Antonyms baseless unfounded Share this Word Facebook WhatsApp X Telegram Copy Link