both·er 
(bŏthər)
(bŏthər)v. both·ered, both·er·ing, both·ers
v.tr.
1. To cause to be irritated, especially by repeated acts; trouble or annoy: "I spoke French badly. So I always replied to him in English. This didn't bother him" (Paul Theroux). See Synonyms at annoy.
2. To make agitated or perplexed; upset: "Jerry could see ... how much the doctor had been bothered by the failure of the first surgery" (Rick Bass).
3. To intrude on without warrant or invitation; disturb: "When I saw him slumped in a chair, deep in thought, I decided not to bother him" (Pat Toomay).
4. To give discomfort or pain to: a back condition that bothers her constantly.
5. To take the trouble (to do something); concern oneself with (accomplishing something): "Most people [with the syndrome] have such mild symptoms that they never bother to see a doctor" (Jane E. Brody).
v.intr.
To take trouble; concern oneself: "old, hard-to-reach coal seams that were too complex or dangerous for other coal companies to bother with" (Jeff Goodell).
n.
A cause or state of disturbance.
interj.
Used to express annoyance or mild irritation.
[Probably from dialectal bodder, possibly of Celtic origin.]