Root Meaning in English Origin language Etymology (root origin) English examples quadr- four Latin quattuor quadrangle, quadrennial, quadriceps , quadracycle quadrifarious, quadrifid, quadrifolium , quadrifrons, quadrilateral , quadrilingual, quadriliteral, quadrillion, quadrimester, quadrinational, quadrinodal, quadrinomial, quadrinominal, quadripara, quadrireme , quadrisection, quadrivalent, quadrivium , quadruped , quadruple, quadruplet, quadruplex, quadruplicate, quatrain , quatre, quatrefoil quadragen- forty each Latin quadrageni quadragenarian, quadragenary quadragesim- fortieth Latin quadragesimus Quadragesima , quadragesimal qual , quant of how much Latin quantus qualis quality, qualify, quantity, quantum quart- fourth Latin quartus inquartation, interquartile , quadroon, quart , quartal, quartan, quartary, quarte , quarter, quartermaster , quartet, quartic , quartile , quartine, quarto , semiquartile quasi- as if, almost Latin quasi quasar , quasiparticle quatern- four each Latin quaternī biquaternion , quatern, quaternary , quaternate, quaternion , quaternity, quire quati- , -cuti- , quass- , -cuss- shake Latin quatere cassate , cassation , concussion , concussive, conquassate, decussation, discuss, discussion, discussive, discutient, excuss, excussio, excussion, fracas, percuss, percussion , percussive, percussor, quash, quassation, recussion, repercussion, rescue, squash, squassation , subconcussive, succuss, succussation, succussion, succussive quer- , -quir- , quesit- , -quisit- search, seek Latin quaerere , quaesītus acquest, acquire, acquiree, acquirement, acquisite, acquisition, acquisitive, acquisitory, conquer, conquest, corequisite, disquisition, exquire, exquisite, inquest, inquire, inquiry, inquisition , inquisitive, inquisitor, inquisitorial , inquisitory, perquisite, perquisition, prerequisite, quaere , quaestor , query, quest , question , questionable, questionary, questionnaire , questor, reconquer, reconquest, request, require, requirement, requisite, requisition, requisitive, requisitor, requisitory qui- rest Latin quies , quiētus acquiesce, acquiescence, acquiescent, acquit, acquittal, acquittance, inquietude, quiescence, quiescent, quiet, quietude, quietus, quit, requiem, requiescat quin- five each Latin quini biquinary, quinarius , quinary , quinate quindecim- fifteenth Latin quindecimus quindecimal quinden- fifteen each Latin quindeni quindenary quinque- five Latin quinque cinquain , cinque, quinquefoil , quinquennial, quinquennium, quinquepartite, quinquevalent quint- fifth Latin quintus biquintile, quint, quinta, quintal, quintan, quintant, quintary, quinte , quintessence , quintessential, quintic , quintile , quintipara, quintus , semiquintile quot- how many, how great Latin quotiens aliquot, quota, quote, quoth, quotient , subquotient