v. 25B6; verb
the police allowed him to go home : PERMIT, let, authorize, give permission/authorization/leave, sanction, grant someone the right, license, enable, entitle; consent, assent, give one's consent/assent/blessing, give the nod, acquiesce, agree, approve; informal give the go-ahead, give the thumbs up, OK, give the OK, give the green light; formal accede.
allow an hour or so for driving : SET ASIDE, allocate, allot, earmark, designate, assign.
the house was demolished to allow for road widening : PROVIDE, get ready, cater, take into consideration, take into account, make provision, make preparations, prepare, plan, make plans.
she allowed that all people had their funny little ways : ADMIT, acknowledge, recognize, agree, accept, concede, grant.
prevent, forbid.