Trouble

A distressing or dangerous situation.

"He was in trouble when the rain started."

A difficulty, problem, condition, or action contributing to such a situation.

"The trouble was a leaking brake line.   The trouble with that suggestion is that we lack the funds to put it in motion.   The bridge column magnified the trouble with a slight tilt in the wrong direction."

A violent occurrence or event.

"the troubles in Northern Ireland"

Efforts taken or expended, typically beyond the normal required.

"It's no trouble for me to edit it."

To disturb, stir up, agitate (a medium, especially water).

To mentally distress; to cause (someone) to be anxious or perplexed.

"What she said about narcissism is troubling me."

In weaker sense: to bother or inconvenience.

"I will not trouble you to deliver the letter."

To take pains to do something.

"I won't trouble to post the letter today; I can do it tomorrow."

(Australian rhyming slang) Wife.