cunso -cun-cu'o- gismu

x1 is random/fortuitous/unpredictable under conditions x2, with probability distribution x3.

Also accidental, chancy, by chance, adventitious, arbitrary (also = cuncu'a, cunselcu'a, cunjdi, cunseljdi; based on "unpredictable"). See also cnici, lakne, funca, kalsa, snuti.

In notes:

cnici
x1 is orderly/neat/ordered in property/quantity x2 (ka/ni).
funca
x1 (event/property) is determined by the luck/fortune of x2; (note mabla/zabna not implied). x1 is determined by chance.
kalsa
x1 is chaotic/disordered in property/aspect x2 (ka).
lakne
x1 (event/state/property) is probable/likely under conditions x2.
snuti
x1 (event/state) is an accident/unintentional on the part of x2; x1 is an accident.
nalra'a
x1 is irrelevant/unrelated to x2; x1 is arbitrary in relation to x2 [object of comparison; context or referent].
nalri'i
r1 (NU) is casual, not formal/ceremonial.
nulpa'a
p1 expects/looks for the occurence of p2 (event), expected likelihood p3 (0-1); p1 subjectively evaluates the likelihood of p2 (event) to be p3.
rolcumja'e
x1 is inevitable under conditions x2; Any cases under conditions x2 result in x1
kanpe
x1 expects/looks for the occurence of x2 (event), expected likelihood x3 (0-1, default {li} {so'a} i.e. near 1); x1 subjectively evaluates the likelihood of x2 (event) to be x3.
entropi
x1 (amount) is the entropy of system x2 under conditions/in macrostate x3, where the entropy is of type/calculated via formula x4.