trouble (v.)

c. 1200, from Old French trubler, metathesis of turbler, torbler "to trouble, disturb; make cloudy, stir up, mix" (11c.), from Vulgar Latin *turbulare, from Late Latin turbidare "to trouble, make turbid," from Latin turbidus (see turbid). Related: Troubled; troubling.

trouble (n.)

c. 1200, "agitation of the mind, emotional turmoil," from Old French truble, torble "trouble, disturbance" (12c.), from trubler/torbler (see trouble (v.)). From early 15c. as "a concern, a cause for worry;" 1590s as "something that causes trouble." Meaning "unpleasant relations with the authorities" is from 1550s. Related: Troubles (1510s). Trouble and strife as rhyming slang for "wife" is recorded from 1908.

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Definitions of trouble from WordNet
trouble (n.)
a source of difficulty;
one trouble after another delayed the job
Synonyms: problem
trouble (n.)
an angry disturbance;
they had labor trouble
Synonyms: fuss / bother / hassle
trouble (n.)
an event causing distress or pain;
what is the trouble?
heart trouble
trouble (n.)
an effort that is inconvenient;
I went to a lot of trouble
he won without any trouble
Synonyms: difficulty
trouble (n.)
a strong feeling of anxiety;
he wanted to die and end his troubles
Synonyms: worry
trouble (n.)
an unwanted pregnancy;
he got several girls in trouble
trouble (v.)
move deeply;
Synonyms: disturb / upset
trouble (v.)
to cause inconvenience or discomfort to;
Sorry to trouble you, but...
Synonyms: put out / inconvenience / disoblige / discommode / incommode / bother
trouble (v.)
disturb in mind or make uneasy or cause to be worried or alarmed;
trouble (v.)
take the trouble to do something; concern oneself;
He did not trouble to call his mother on her birthday
Synonyms: trouble oneself / bother / inconvenience oneself
trouble (v.)
cause bodily suffering to and make sick or indisposed;
Synonyms: ail / pain