Random

A roving motion; course without definite direction; lack of rule or method; chance.

Speed, full speed; impetuosity, force.

The full range of a bullet or other projectile; hence, the angle at which a weapon is tilted to allow the greatest range.

An undefined, unknown or unimportant person; a person of no consequence.

"The party was boring. It was full of randoms."

Having unpredictable outcomes and, in the ideal case, all outcomes equally probable; resulting from such selection; lacking statistical correlation.

"The flip of a fair coin is purely random."

Of or relating to probability distribution.

"A toss of loaded dice is still random, though biased."

Pseudorandom; mimicking the result of random selection.

(somewhat colloquial) Representative and undistinguished; typical and average; selected for no particular reason.

"A random American off the street couldn't tell the difference."