"thirstier" in the adjective sense
1. thirsty
needing moisture
"thirsty fields under a rainless sky"
2. thirsty
feeling a need or desire to drink
"after playing hard the children were thirsty"
3. athirst, hungry, thirsty
usually followed by `for') extremely desirous
"athirst for knowledge"
"hungry for recognition"
"thirsty for information"
4. thirsty
able to take in large quantities of moisture
"thirsty towels"
Source: WordNet® (An amazing lexical database of English)
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