aleatory (adj.)

• accidental
• adventitious
• adventurous
• amorphous
• blurred
• blurry
• broad
• casual
• causeless
• chance
• chancy
• chaotic
• circumstantial
• conditional
• confused
• contingent
• dicey
• disordered
• fatal
• fluky
• foggy
• fortuitous
• fuzzy
• general
• hazardous
• hazy
• hit-or-miss
• iffy
• ill-defined
• imprecise
• inaccurate
• inchoate
• incidental
• incoherent
• indecisive
• indefinable
• indefinite
• indeterminable
• indeterminate
• indistinct
• inessential
• inexact
• lax
• loose
• nonessential
• nonspecific
• obscure
• occasional
• piece
• provisional
• random
• risky
• score
• shadowy
• shapeless
• speculative
• stochastic
• sweeping
• uncaused
• unclear
• undefined
• undetermined
• unessential
• unexpected
• unforeseeable
• unforeseen
• unlooked-for
• unpredictable
• unspecified
• vague
• veiled
• venturesome
• venturous
• wildcat
• work