quota quality qualify questionable qualification quotation quit queue quote quantity questioning questionnaire quantifiable quietly quantify quest quarterly quarrel quarter-century quantitative query quotient quicken quench quiz quickness quirk quantum quixotic quell quintessential quip quartet quake quirky quadrant quandary querulous qualitative quiescent quibble quizzical qualm qualitatively quaint quadruple quintet quinine quantification quarry quartz quart quail quiver quicksand quern quietness quilt quaker questionably quipu quarrelsome qualifier quack quantize quadratic quantifier quarantine quark quire quad quid quash quinoa quadriga queasy quadru- queer quadrennial quaff quintessence quintile quicksilver quay quasi-religious quarterback quantitatively quisling quagmire quasar questioner quasi-legal quango quorum quasi- quieten quick-fire quincentenary quadrillion quadriplegic quadrangle quilter queerness quick-response quiesce quaintly quin- quaffable quadri- qawwali quarter-circle quixotically quaternary quint quasi-official quick-witted quadriplegia quadriceps quadruplet quadrangular quadr-