1. (noun) lightweight
a professional boxer who weighs between 131 and 135 pounds
Synonyms: whippersnapper, jackanapes
Antonyms: of import, heavy, important
2. (noun) whippersnapper, jackanapes, lightweight
someone who is unimportant but cheeky and presumptuous
Synonyms: lightweight, whippersnapper, jackanapes
Antonyms: important, heavy, of import
3. (noun) lightweight
an amateur boxer who weighs no more than 132 pounds
Synonyms: whippersnapper, jackanapes
Antonyms: of import, important, heavy
4. (adj) lightweight
a wrestler who weighs 139-154 pounds
Synonyms: whippersnapper, jackanapes
Antonyms: heavy, of import, important
5. (adj) lightweight
weighing relatively little compared with another item or object of similar use
Antonyms: important, heavy, of import
6. (adj) lightweight
having no importance or influence
Antonyms: of import, important, heavy
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Synonyms and Antonyms of lightweight 
