x_{1} is a logical 'NOT' statement resulting from the (multiplicative) negation of/applying the 'NOT' operator to x_{2} (du'u); x_{1} is the logical negation/negative of x_{2}.

x_{1} and x_{2} have mutually opposite truth values. This word is useful for producing "'NOR' statement" from kanxe, for example. See also: na, nai. This is to na or nai approximately as kanxe is to je.