Bulge out antonyms

What is the opposite word for Bulge out?

• unblock

  to put in and occupy the whole of
• release

  to put in and occupy the whole of
• open

  to put in and occupy the whole of
• unstop

  to put in and occupy the whole of
• dissatisfy

  to put in and occupy the whole of
• deplete
• abstain
• diet
• fast
• compress
• deprive
• empty
• use
• fail
• use up
• waste
• contract
• deflate
• shrink
• miss
• drain
• exhaust
• spend
• take
• void