exhausting
verb
Definitions
To draw or let out wholly; to drain off completely
Example: Moisture of the earth is exhausted by evaporation.
To empty by drawing or letting out the contents
Example: to exhaust a treasury
To drain; to use up or expend wholly, or until the supply comes to an end
Example: I exhausted my strength walking up the hill.
To tire out; to wear out; to cause to be without any energy
Example: The marathon exhausted me.
adjective
Definitions
Very tiring.
Example: This task is exhausting!