[syn: hunger, hungriness, thirst, thirstiness]
The Collaborative International Dictionary of English v.0.48:
Thirstiness \Thirst"i*ness\, n.
   The state of being thirsty; thirst.
   [1913 Webster]
WordNet (r) 3.0 (2006):
thirstiness
    n 1: a deficiency of moisture (especially when resulting from a
         permanent absence of rainfall) [syn: aridity, aridness,
         thirstiness]
    2: a physiological need to drink [syn: thirst, thirstiness]
    3: strong desire for something (not food or drink); "a thirst
       for knowledge"; "hunger for affection" [syn: hunger,
       hungriness, thirst, thirstiness]