There are 2 definitions of tiff in English:

tiff1

Syllabification: tiff

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

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 glee
Pronunciation: gliː
noun
great delight, especially from one's own good fortune…

There are 2 definitions of tiff in English:

TIFF2

Syllabification: TIFF

noun

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

Origin

1990s: acronym from tagged image file format.

Definition of tiff in: