Synonyms for Mac OS X 10.7 in Free Thesaurus. Antonyms for Mac OS X 10.7. 55 synonyms for lion: hero, champion, fighter, warrior, conqueror, lionheart, brave person. Synonyms for Mac OS X 10.7 in Free Thesaurus. Antonyms for Mac OS X 10.7. 55 synonyms for lion: hero, champion, fighter, warrior, conqueror, lionheart, brave person.