1.  hassle(n = noun.event) bother, fuss, trouble - an angry disturbance; "he didn't want to make a fuss"; "they had labor trouble"; "a spot of bother"
is a kind of disturbance, perturbation
Derived form verb hassle₁

2.  hassle(n = noun.act) dogfight, rough-and-tumble, scuffle, tussle - disorderly fighting;
is a kind of combat, fight, fighting, scrap

   hassle(v = verb.emotion) beset, chevvy, chevy, chivvy, chivy, harass, harry, molest, plague, provoke - annoy continually or chronically; "He is known to harry his staff when he is overworked"; "This man harasses his female co-workers"
is one way to annoy, bother, chafe, devil, get at, get to, gravel, irritate, nark, nettle, rag, rile, vex
Derived form noun hassle₁
Sample sentences: Sam cannot hassle Sue

1.  An inconvenience caused by difficulties encountered trying to accomplish a task; as, finding a parking place in midtown is always a hassle. [WordNet 1.5]

2.  disorderly fighting; an angry dispute or disturbance. [WordNet 1.5]

1.  to dispute or quarrel, often over petty disagreements. [PJC]

2.  To expend excessive time and energy trying to accomplish a task. [PJC]

   to repeatedly annoy; as, He is known to hassle his staff when he is overworked. [WordNet 1.5]

hassle, n. & v. colloq.
--n.
1 a prolonged trouble or inconvenience.
2 an argument or involved struggle.
--v.
1 tr. harass, annoy; cause trouble to.
2 intr. argue, quarrel.

Etymology:
20th c.: orig. dial.