If you are thirsty, you feel a need to drink something. Drink whenever you feel thirsty during exercise. + thirstily thirsti·ly The child nodded, drinking her milk thirstily
able to take in large quantities of moisture; "thirsty towels" feeling a need or desire to drink; "after playing hard the children were thirsty" needing moisture; "thirsty fields under a rainless sky
If you are thirsty for something, you have a strong desire for it. People should understand how thirsty for revenge they are. = hungry