Definition of interference :
1. The act or state of interfering, or of claiming a right to the same invention.
2. The act or state of interfering; as, the stoppage of a machine by the interference of some of its parts; a meddlesome interference in the business of others.
3. The mutual influence, under certain conditions, of two streams of light, or series of pulsations of sound, or, generally, two waves or vibrations of any kind, producing certain characteristic phenomena, as colored fringes, dark bands, or darkness, in the case of light, silence or increased intensity in sounds; neutralization or superposition of waves generally.
hurly burly, tour of duty, check, noise, ruffle, load, hobble, psychological disorder, incumbrance, interception, limp, disruption, fray, flutter, collision, to-do, intrusion, racket, intercession, clashing, barrier, removal, deterrent, perturbation, arrest, contraceptive, intervention, obtrusion, preventative, enlistment, hinderance, disturbance, dissonance, meddling, snag, obstacle, kerfuffle, halt, burden, preventive, birth control device, hitch, block, clearance, blocking, randomness, term of enlistment, folie, interruption, prying, hoo-hah, treatment, mental disturbance, encumbrance, interposition, duty tour, haphazardness, participate, baulk, stop, handicap, rub, balk, stochasticity, commotion, contraceptive device, affray, onus, restraint, hang-up, retardation, mental disorder, prophylactic, tour, stoppage, prophylactic device, stay, upset, hoo-ha
opposition (part of speech: noun)
contradiction, suppression, adversary, conflict, repression, fight, impediment, counterattack, opposition, disagreement, protest, confrontation, friction, counteraction, antagonism, inhibition, hindrance, obstinacy, obstruction, rebuff, objection, defiance, repulsion, challenge, dispute, resistance
- The lover was quite agreed to this, he was too sure of his good fortune to dread any interference. - "Quicksands", Adolph Streckfuss.
- Let us consider the obstacles in our path- the matter of official interference. - "The Gun-Brand", James B. Hendryx.
- A miracle, we are told, is an interference with the laws of nature; and it is impossible, because they are fixed and their operation is uniform. - "The Gospel According to St. Mark", G. A. Chadwick.