bulk is on the Academic Word List.

Pronunciation

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Singular
bulk

Plural
bulks

  1. (uncountable) The bulk of something is the largest part of it.
    The bulk of the shipment was headed for Toronto.
    The great bulk of crime has always involved stealing of one kind or another.
  2. (uncountable) Someone or something's bulk is its size or amount, especially if it is large.
    She took a deep breath, and, enormously grateful for the solid bulk of Leo at her back, she stepped inside.
  3. (uncountable) If you sell something in bulk, it is not individually packaged.
    I usually buy nuts at the bulk food store.
  4. (uncountable) If you buy something in bulk, you buy large amounts.
    The store offers discounts for buying in bulk.
  5. (countable) A bulk is an item that is moved about like cargo.

Synonyms

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Plain form
bulk

Third-person singular
bulks

Past tense
bulked

Past participle
bulked

Present participle
bulking

  1. If something bulks, it appears to be big in size.
  2. If you bulk something, you increase its' size; you expand it.

Synonyms

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