Make it possible through a specific action or lack of action for something to happen:
— This sealed door won't allow the water come into the basement.

synonyms: let, permit.

Consent to, give permission:
— I cannot allow you to see your exam.

synonyms: countenance, let, permit.

Roget 813: discount, bate; abate, rebate; reduce, price down, mark down take off, allow, give, make allowance; tax.   

Roget 760: permit; give permission etc. n., give power; let, allow, admit; suffer, bear with, tolerate, recognize; concede etc. 762; accord, vouchsafe, favor, humor, gratify, indulge, stretch a point; wink at, connive at; shut one's eyes to.    grant, empower, charter, enfranchise, privilege, confer a privilege, license, authorize, warrant; sanction; intrust etc. (commission) 755.    give carte blanche [Fr.], give the reins to, give scope to etc. (freedom) 748; leave alone, leave it to one, leave the door open; open the door to, open the flood gates; give a loose to.    let off; absolve etc. (acquit) 970; release, exonerate, dispense with.    ask permission, beg permission, request permission, ask leave, beg leave, request leave.    ... show more

Roget 488: assent; give assent, yield assent, nod assent; acquiesce; agree etc. 23; receive, accept, accede, accord, concur, lend oneself to, consent, coincide, reciprocate, go with; be at one with etc. adj.; go along with, chime in with, strike in with, close in with; echo, enter into one's views, agree in opinion; vote, give one's voice for; recognize; subscribe to, conform to, defer to; say yes to, say ditto, amen to, say aye to.    acknowledge, own, admit, allow, avow, confess; concede etc. (yield) 762; come round to; abide by; permit etc. 760.    arrive at an understanding, come to an understanding, come to terms, come to an agreement.    confirm, affirm; ratify, appprove, indorse, countersign; corroborate etc. 467.    go with the stream, swim with the stream, go with the flow, blow with the wind; be in fashion, join in the chorus, join the crowd, be one of the guys, be part of the group, go with the crowd, don't make waves; be in every mouth.    ... show more

Dutch: toelaten

Let have:
— Mandela was allowed few visitors in prison.

synonym: grant.

Roget 784: deliver, hand, pass, put into the hands of; hand over, make over, deliver over, pass over, turn over; assign dower.    present, give away, dispense, dispose of; give out, deal out, dole out, mete out, fork out, squeeze out.    pay etc. 807; render, impart, communicate.    concede, cede, yield, part with, shed, cast; spend etc. 809.    give, bestow, confer, grant, accord, award, assign.    intrust, consign, vest in.    make a present; allow, contribute, subscribe, furnish its quota.    invest, endow, settle upon; bequeath, leave, devise.    furnish, supply, help; administer to; afford, spare; accommodate with, indulge with, favor with; shower down upon; lavish, pour on, thrust upon.    tip, bribe; tickle the palm, grease the palm; offer etc. 763; sacrifice, immolate.    ... show more

Roget 529: disclose, discover, dismask^†; draw the veil, draw aside the veil, lift the veil, raise the veil, lift up the veil, remove the veil, tear aside the veil, tear the curtain; unmask, unveil, unfold, uncover, unseal, unkennel; take off the seal, break the seal; lay open, lay bare; expose; open, open up; bare, bring to light.    divulge, reveal, break; squeal [Coll.], tattle [Coll.], sing [Coll.], rat [Coll.], snitch [Coll.]; let into the secret; reveal the secrets of the prison house; tell etc. (inform) 527; breathe, utter, blab, peach; let out, let fall, let drop, let slip, spill the beans, let the cat out of the bag; betray; tell tales, come out of school; come out with; give vent, give utterance to; open the lips, blurt out, vent, whisper about; speak out etc. (make manifest) 525; make public etc. 531; unriddle etc. (find out) 480.1; split.    acknowledge, allow, concede, grant, admit, own, own up to, confess, avow, throw off all disguise, turn inside out, make a clean breast; show one's hand, show one's cards; unburden one's mind, disburden one's mind, disburden one's conscience, disburden one's heart; open one's mind, lay bare one's mind, tell a piece of one's mind [Fr.]; unbosom oneself, own to the soft impeachment; say the truth, speak the truth; turn King's evidence, Queen's evidence; acknowledge the corn [U.S.].    raise the mask, drop the mask, lift the mask, remove the mask, throw off the mask; expose; lay open; undeceive^†, unbeguile^†; disabuse, set right, correct, open the eyes of; d_esillusionner.    be disclosed &c.; transpire, come to light; come in sight etc. (be visible) 446; become known, escape the lips; come out, ooze out, creep out, leak out, peep out, crop-out; show its face, show its colors; discover itself &c.; break through the clouds, flash on the mind.    ... show more

Roget 762: consent; assent etc. 488; yield assent, admit, allow, concede, grant, yield; come round, come over; give into, acknowledge, agnize^†, give consent, comply with, acquiesce, agree to, fall in with, accede, accept, embrace an offer, close with, take at one's word, have no objection.    satisfy, meet one's wishes, settle, come to terms etc. 488; not refuse etc. 764; turn a willing ear etc. (willingness) 602; jump at; deign, vouchsafe; promise etc. 768.    ... show more

Dutch: laten doen

Give or assign a resource to a particular person or cause.

synonyms: appropriate, earmark, reserve, set aside.

Make a possibility or provide opportunity for; permit to be attainable or cause to remain:
— The evidence allows only one conclusion.
— Allow for mistakes.

synonyms: allow for, leave, provide.

Dutch: laten

Allow or plan for a certain possibility; concede the truth or validity of something:
— I allow for this possibility.

synonym: take into account.

Dutch: rekening houden, verdisconteren, verwerken

Afford possibility:
— This short story allows of several different interpretations.

synonym: admit.

Allow the other (baseball) team to score.

synonym: give up.

Grant as a discount or in exchange.

Allow the presence of or allow (an activity) without opposing or prohibiting:
— We don't allow dogs here.

synonyms: permit, tolerate.

Dutch: verdragen