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Webster 1913 Edition
Tiff
Tiff
,Noun.
 [Originally, a sniff, sniffing; cf. Icel. 
[GREEK]efr 
a smell, [GREEK]efa 
to sniff, Norw. tev 
a drawing in of the breath, teva 
to sniff, smell, dial. Sw. tüv 
smell, scent, taste.] 1. 
Liquor; especially, a small draught of liquor. 
“Sipping his tiff of brandy punch.” Sir W. Scott.
 Tiff
,Verb.
 I.
 [
imp. & p. p. 
Tiffed
; p. pr. & vb. n. 
Tiffing
.] To be in a pet. 
She 
 tiffed 
with Tim, she ran from Ralph. Landor.
Tiff
,Verb.
 T.
 [OE. 
tiffen
, OF. tiffer
, tifer
, to bedizen; cf. D. tippen 
to clip the points or ends of the hair, E. tip
, n.] To deck out; to dress. 
[Obs.] 
A. Tucker.
 Webster 1828 Edition
Tiff
TIFF
,Noun.
  1.
  A pet or fit of peevishness.[I know not where this word is used in the latter sense.]
TIFF
,Verb.
I.
  TIFF
,Verb.
T.