1. permit, allow, let, countenance, accept, consent, go for
usage: consent to, give permission; "She permitted her son to visit her estranged husband"; "I won't let the police search her basement"; "I cannot allow you to see your exam"
2. let, allow, permit
usage: make it possible through a specific action or lack of action for something to happen; "This permits the water to rush in"; "This sealed door won't allow the water come into the basement"; "This will permit the rain to run off"
3. allow, permit, tolerate, permit, allow, let, countenance
usage: allow the presence of or allow (an activity) without opposing or prohibiting; "We don't allow dogs here"; "Children are not permitted beyond this point"; "We cannot tolerate smoking in the hospital"