From The Collaborative International Dictionary of English v.0.48:
Trouble \Trou"ble\, v. t. [imp. & p. p. Troubled; p. pr. & vb. n. Troubling.] [F. troubler, OF. trobler, trubler, tourbler,fr. (assumed) LL. turbulare, L. turbare to disorderly group, a little crowd; both from turba a disorder, tumult, crowd; akin to Gr. ?, and perhaps to E. thorp; cf. Skr. tvar, tur,o hasten. Cf. Turbid.] 1. To put into confused motion; to disturb; to agitate. [1913 Webster]
An angel went down at a certain season into the pool, and troubled the water. --John v. 4. [1913 Webster]
God looking forth will trouble all his host. --Milton. [1913 Webster]
2. To disturb; to perplex; to afflict; to distress; to grieve; to fret; to annoy; to vex. [1913 Webster]
Now is my soul troubled. --John xii. 27. [1913 Webster]
Take the boy to you; he so troubles me 'T is past enduring. --Shak. [1913 Webster]
Never trouble yourself about those faults which age will cure. --Locke. [1913 Webster]
3. To give occasion for labor to; -- used in polite phraseology; as, I will not trouble you to deliver the letter. [1913 Webster]
Syn: To disturb; perplex; afflict; distress; grieve; harass; annoy; tease; vex; molest. [1913 Webster]