querulousness(n = noun.attribute) - the quality of being given to complaining;
is a kind of biliousness, irritability, peevishness, pettishness, snappishness, surliness, temper
Derived form adjective querulous₁

N  discontent, discontentment, dissatisfaction, dissent, disappointment, mortification, cold comfort, regret, repining, taking on, heart-burning, heart-grief, querulousness, hypercriticism, inquietude, vexation of spirit, soreness, worry, concern, fear, malcontent, grumbler, growler, croaker, dissident, dissenter, laudator temporis acti, censurer, complainer, fault-finder, murmerer, cave of Adullam, indignation meeting, winter of our discontent, with what I most enjoy contented least, discontented, dissatisfied, unsatisfied, ungratified, dissident, dissentient, malcontent, malcontented, exigent, exacting, hypercritical, repining, regretful, down in the mouth, in high dudgeon, in a fume, in the sulks, in the dumps, in bad humor, glum, sulky, sour as a crab, soured, sore, out of humor, out of temper, disappointing, unsatisfactory, frustrated (failure), Int, so much the worse!, that won't do, that will never do, it will never do, curtae nescio quid semper abest rei, ne Jupiter Quidem omnibus placet, poor in abundance, famished at a feast.