There are 2 definitions of tiff in English:

tiff1

Line breaks: tiff
Pronunciation: /tɪf
 
/

noun

informal
A petty quarrel, especially one between friends or lovers: Joanna had a tiff with her boyfriend
More example sentences
  • Remember that you're too important to deal with employees' petty tiffs.
  • And anyway, I'm sure they were only having a lovers' tiff!
  • What if it was just a tiff between two friends today?
Synonyms
quarrel, squabble, row, argument, fight, contretemps, disagreement, difference of opinion, dissension, falling-out, dispute, disputation, contention, clash, altercation, shouting match, exchange, war of words; tussle, conflict, fracas, affray, wrangle, tangle; Irish, North American, & Australiandonnybrook
British informal barney, slanging match, bunfight, ding-dong, bust-up, ruck
Scottish informal rammy
North American informal rhubarb
archaic broil, miff
Scottish archaic threap, collieshangie
French archaic tracasserie(s)

Origin

early 18th century (denoting a slight outburst of temper): probably of dialect origin.

Definition of tiff in:

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Word of the day flippant
Pronunciation: ˈflɪp(ə)nt
adjective
not showing a serious or respectful attitude

There are 2 definitions of tiff in English:

TIFF2

Line breaks: TIFF
Pronunciation: /tɪf
 
/

noun

Computing
A format for image files: [as modifier]: a TIFF image

Origin

1990s: acronym from tagged image file format.

Definition of tiff in: