exhaustion

exhaustion /ɪgˈzɑːstʃən/ noun
exhaustion
/ɪgˈzɑːstʃən/
noun
Britannica Dictionary definition of EXHAUSTION
[noncount]
1 
: the state of being extremely tired : the state of being exhausted
— see also heat exhaustion
2 
: the act of using all of something : the act of exhausting something