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Either

usgb/ˈiːðər,ˈaɪðər/Volume
Left Definition 1 of 4Right
LampPro Tip 1/3
Choice ImplicationPlay
Implies exclusivity between choices; selecting one option means not selecting the other. SlideYou must either study law or medicine.
LampPro Tip 2/3
Equal ProbabilityPlay
Suggests both options are equally likely or possible, doesn't favor one over the other. SlideIt might either rain or snow tomorrow.
LampPro Tip 3/3
Mutual ExclusivityPlay
Used when the two possibilities cannot both occur at the same time. SlideThe door must be either closed or open, not both.