trouble

1. A distressing or dangerous situation.

   He was in trouble when the rain started.

2. 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.

3. A violent occurrence or event.

   the troubles in Northern Ireland

4. Efforts taken or expended, typically beyond the normal required.

   It's no trouble for me to edit it.

5. A malfunction.

   He's been in hospital with some heart trouble.   My old car has engine trouble.

6. Liability to punishment; conflict with authority.

   He had some trouble with the law.

7. A fault or interruption in a stratum.

1. To disturb, stir up, agitate (a medium, especially water).
2. To mentally distress; to cause (someone) to be anxious or perplexed.

   What she said about narcissism is troubling me.

3. In weaker sense: to bother or inconvenience.

   I will not trouble you to deliver the letter.

4. To take pains to do something.

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

5. To worry; to be anxious.

noun

(Australian rhyming slang) Wife.