trying

adjectives

hard to endure
"fell upon trying times"
trying
is similar to
not easy; requiring great physical or mental effort to accomplish or comprehend or endure
"a difficult task"; "nesting places on the cliffs are difficult of access"; "difficult times"; "why is it so hard for you to keep a secret?"
difficult, hard
extremely irritating to the nerves
"nerve-racking noise"; "the stressful days before a war"; "a trying day at the office"
nerve-racking, nerve-wracking, stressful, trying