Random
Part of speech: noun
Definition: Speed, full speed; impetuosity, force. An undefined, unknown or unimportant person; a person of no consequence.
Part of speech: adjective
Definition: Having unpredictable outcomes and, in the ideal case, all outcomes equally probable; resulting from such selection; lacking statistical correlation. Of or relating to probability distribution. Pseudorandom in contrast to truly random; mimicking the result of random selection. Representative and undistinguished; typical and average. Apropos of nothing; lacking context; unexpected; having apparent lack of plan, cause or reason.
Example sentence: Self-control means wanting to be effective at some random point in the infinite radiations of my spiritual existence.
Haphazard
Part of speech: adjective
Definition: random; chaotic; incomplete; not thorough, constant or consistent