[{"word":"retardation","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"The act of retarding or delaying; hindrance.","synonyms":[],"antonyms":[]},{"definition":"The extent to which anything is retarded; the result of any retarding or delay; mental, social, or physical slowness.","synonyms":[],"antonyms":[]},{"definition":"Extreme stupidity.","synonyms":[],"antonyms":[]},{"definition":"That which retards; an obstacle; an obstruction.","synonyms":[],"antonyms":[]},{"definition":"Deceleration; reduction in the magnitude of velocity.","synonyms":[],"antonyms":[]},{"definition":"A suspension which resolves upwards.","synonyms":[],"antonyms":[]}],"synonyms":[],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/retardation"]}]