random

^{[ ran-duhm ]}

See synonyms for: random / randomly / randomness on Thesaurus.com

adjective

proceeding, made, or occurring without definite aim, reason, or pattern:the random selection of numbers.

Statistics. of or characterizing a process of selection in which each item of a set has an equal probability of being chosen.

Building Trades.

1. (of building materials) lacking uniformity of dimensions:
   random shingles.
2. (of ashlar) laid without continuous courses.
3. constructed or applied without regularity:
   random bond.

noun

something that is random, or a random state or condition:different statistical methods used to estimate randoms.

Slang.

1. a person or thing that is unknown, unidentified, or suspiciously out of place.
2. a person or thing that is odd or unpredictable.

adverb

Building Trades. without uniformity:
random-sized slates.

Reference: https://www.dictionary.com/browse/random