tiff
noun /tɪf/
  /tɪf/
 (informal)- a slight argument between close friends or two people who love each other
- to have a tiff with somebody
 - It’s just a lovers’ tiff.
 - She was upset because she’d had a tiff with her boyfriend.
 
Word Originearly 18th cent. (denoting a slight outburst of temper): probably of dialect origin.