[{"word":"oldster","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"Someone who is old.","synonyms":[],"antonyms":[]},{"definition":"A midshipman of four years' standing; a master's mate.","synonyms":[],"antonyms":[]}],"synonyms":["geriatric","old timer","senior citizen"],"antonyms":["youngster"]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/oldster"]}]