exhausting
1. [ adjective ] having a debilitating effect
Synonyms: killing draining
Examples:

"a killing job in the hot sun"

Related terms: debilitating
2. [ adjective ] producing exhaustion
Synonyms: tiring wearying wearing
Examples:

"an exhausting march" "the visit was especially wearing"

Related terms: effortful
Similar spelling:   exhaust
  exhaustion
  exacting
  existing
  exhaustive
  exhaustible
  exhaust_fan
  exaction
  exhaustively
  exhausted
  executing
  exhaust_pipe
  exhaust_hood
  exhaust_valve
  exhaust_fumes
  excusatory
  exactitude