All of these words are just too Q-cumbersome:
Albuquerque; equivoque; quaquaversal; querquedule; quinquagesima; quinquangular; quinquarticular;

quinqueangled; quinquedentate; quinquedentated;

quinquefarious; quinquefid; quinquefoliate; quinquefoliated;

quinqueliteral; quinquelobate; quinquelobared; quinquelobed; quinquelocular; quinquenerved; quinquennial; quinquennium; quinquepartite; quinquereme;

quinquesyllable; quinquevalve; quinquevalvular; quinquivalent; subquinquefid