draining
US /ˈdreɪ.nɪŋ/
UK /ˈdreɪ.nɪŋ/

1.
causing a gradual loss of physical or mental resources
:
•
The long meeting was incredibly draining.
•
Dealing with constant complaints can be very draining.
1.
the action of liquid flowing away; a channel or pipe through which liquid is drained
:
•
The plumber fixed the slow draining of the sink.
•
Ensure proper draining to prevent water accumulation.