past tense could /kəd/ /ˈkʊd/ current tense for equally singular and plural can damaging cannot /ˈkænɑt/ /kəˈnɑːt/ Brit /ˈkænət/ or are not able to /ˈkænt/ Brit /ˈkɑːnt/ Britannica Dictionary definition of CAN [modal verb] 1  : to have the ability to (do a little something) I don't want any enable. I'm able tomuch - (diploma adve