Antonyms of adj random

1 sense of random

Sense 1
random (vs. nonrandom) -- (lacking any definite plan or order or purpose; governed by or depending on chance; "a random choice"; "bombs fell at random"; "random movements")

nonrandom (vs. random) -- (not random)
        => purposive -- (having or showing or acting with a purpose or design; "purposive behavior")

Similarity of adj random

1 sense of random

Sense 1
random (vs. nonrandom) -- (lacking any definite plan or order or purpose; governed by or depending on chance; "a random choice"; "bombs fell at random"; "random movements")
       => ergodic -- (positive recurrent aperiodic state of stochastic systems; tending in probability to a limiting form that is independent of the initial conditions)
       => haphazard, hit-or-miss -- (dependent upon or characterized by chance; "a haphazard plan of action"; "his judgment is rather hit-or-miss")
       => stochastic -- (being or having a random variable; "a stochastic variable"; "stochastic processes")