interfere

verb4

1. •
   to try to change or control something that is other people's business, and cause trouble

   • I always try not to interfere with other people’s personal affairs.
2. •
   Of waves, to be correlated with each other when overlapped or superposed.

   • Correlated waves interfere to produce interesting patterns, while uncorrelated waves overlap without interfering.
   • Where the radio-wave signals of the two radio stations interfere the listener hears nothing but noise.
3. •
   (euphemistic) To sexually molest, especially of a child.

   • The investigation found the girls had been interfered with.
4. •
   Of a horse, to strike one foot against the opposite foot or ankle by using the legs.