To sustain or endure; specifically, in medicine, to endure or support, as a strain or a drug, without pernicious effect.To suffer to be or to be done without prohibition or hindrance; allow or permit negatively, by not preventing; put up with; endure; refrain from restraining; treat in a spirit of patience and forbearance; forbear to judge of or condemn with bigotry and severity: as, to tolerate opinions or practices.Synonyms Permit, Consent to, etc. (see allow); brook, put up with, abide, bear, bear with.