Every  adj. 1 each single (heard every word). 2 each at a specified interval in a series (comes every four days). 3 all possible (every prospect of success).  every bit as colloq. (in comparisons) quite as. Every now and again (or then) from time to time. Every other each second in a series (every other day). Every so often occasionally. [old english: related to *ever, *each]