Interference is something that is in your way. If the sound of your sister's band practicing keeps you from getting your homework done, that’s interference.

Governments are sometimes accused of interference in other countries' affairs. If your neighbor’s in a civil war and your president sends in troops, your country may be accused of interference in that country's internal affairs, If all you hear on your radio is static, you’ve got interference — something is blocking the clear signal. And when a football player blocks another player, that's also interference. The Latin roots of interference are entre-, “between,” and ferire, “strike.”

Definitions of interference

n the act of hindering or obstructing or impeding

hinderance, hindrance
show 20 types...
hide 20 types...
foiling, frustration, thwarting
an act of hindering someone's plans or efforts
(biochemistry) interference in or inhibition of the physiological action of a chemical substance by another having a similar structure
the act of obstructing
the act or process of complicating
the act or process of discouraging actions or preventing occurrences by instilling fear or doubt or anxiety
bar, prevention
the act of preventing
blockage, closure, occlusion
the act of blocking
stall, stalling
a tactic used to mislead or delay
the act of discouraging
nuclear deterrence
the military doctrine that an enemy will be deterred from using nuclear weapons as long as he can be destroyed as a consequence
the act of preventing something from occurring
the act of prevention by legal means
the act of preventing someone from participating by finding them unqualified
the act of intercepting; preventing something from proceeding or arriving
non-proliferation, nonproliferation
the prevention of something increasing or spreading (especially the prevention of an increase in the number of countries possessing nuclear weapons)
forestalling, obviation, preclusion
the act of preventing something by anticipating and disposing of it effectively
the prevention of disease
(sports) the act of preventing the opposition from scoring
crushing, quelling, stifling, suppression
forceful prevention; putting down by power or authority
obstruction of justice
impeding those who seek justice in a court (as by trying to influence or intimidate any juror or witness or officer of the court); can result in a finding of contempt of court
Type of:
act, deed, human action, human activity
something that people do or cause to happen

n (American football) blocking a player's path with your body

“he ran interference for the quarterback”
Type of:
block, blocking
the act of obstructing or deflecting someone's movements

n any obstruction that impedes or is burdensome

encumbrance, hinderance, hindrance, hitch, incumbrance, preventative, preventive
any object that acts as a hindrance or obstruction
speed bump
a hindrance to speeding created by a crosswise ridge in the surface of a roadway
Type of:
impediment, impedimenta, obstructer, obstruction, obstructor
any structure that makes progress difficult

n a policy of intervening in the affairs of other countries

noninterference, nonintervention
a foreign policy of staying out of other countries' disputes
Type of:
foreign policy
a policy governing international relations

n electrical or acoustic activity that can disturb communication

disturbance, noise
show 10 types...
hide 10 types...
unwanted echoes that interfere with the observation of signals on a radar screen
background, background signal
extraneous signals that can be confused with the phenomenon to be observed or measured
XT, crosstalk
the presence of an unwanted signal via an accidental coupling
a gradual temporary loss of a transmitted signal due to electrical disturbances
small rapid variations in a waveform resulting from fluctuations in the voltage supply or mechanical vibrations or other sources
atmospheric static, atmospherics, static
a crackling or hissing noise caused by electrical interference
white noise
a noise produced by a stimulus containing all of the audible frequencies of vibration
background noise, ground noise
extraneous noise contaminating sound measurements that cannot be separated from the desired signal
background radiation
radiation coming from sources other than those being observed
radio noise
static at radio wavelengths
Type of:
an event causing distress or pain

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, can put you on the path to systematic vocabulary improvement.