insucking

in +‎ sucking

insucking (plural insuckings)

1. A sucking inward.
   • 1910, Robert Ames Bennet, The Shogun's Daughter

     Yoritomo met their smiles and kowtowings and noisy insuckings of breath with an austere dignity that I took pains to imitate.

   • Oliver Sacks, Awakenings

     Her initial response to this was a retropulsion or insucking of the tongue, so severe that speech was impossible, and she was in continual danger of swallowing her tongue.

• sucking in