yawnful

[yawn-fuh l]
adjective
  1. causing or arousing yawns, especially as the result of boredom, tedium, or the like: a yawnful story about her childhood.

Origin of yawnful

Related formsyawn·ful·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018