Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

bulk up

verb

Definition of bulk up

  1. intransitive verb
  2. :  to gain weight especially by becoming more muscular

  3. transitive verb
  4. :  to cause to bulk up



Examples of bulk up in a sentence

  1. <she bulked up her hair with one hand as she reached for the shears with the other>



1979

First Known Use of bulk up

1979


Seen and Heard

What made you want to look up bulk up? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a secret group of plotters

Get Word of the Day daily email!