fully, wide
She opened all the windows wide to let some fresh air in.

gingerly
Fred opened the box gingerly and peered inside.

quickly, suddenly
slowly
automatically
The glass doors opened automatically for him.

out, up
I opened out the map and laid it on the table.
‘Open up!’ He shouted, hammering on the door.

try to
manage to
fail to
Her parachute failed to open.

formally, officially
up
the opportunity to open up new markets

be due to, be expected to, be scheduled to
The museum is due to open next year.

hope to, intend to, plan to, want to, wish to

newly opened, recently opened
the newly opened gallery of Western decorative art

Open is used with these nouns as the subject:
bud, chasm, conference, curtain, decade, divide, door, elevator, exhibit, exhibition, eye, factory, festival, film, gallery, gate, gulf, hearing, index, inquest, key, market, meeting, mouth, movie, museum, parachute, poll, restaurant, session, shop, sky, stock exchange, store, story, talk, trading, trial, window, work

Open is used with these nouns as the object:
account, airspace, archive, arm, artery, attachment, avenue, backpack, bag, beak, blind, bonnet, book, boot, border, bottle, boutique, bowel, bowling, box, branch, briefcase, can, carton, cash register, channel, chasm, closet, coconut, congress, conversation, cover, crate, cupboard, curtain, debate, dialogue, discussion, document, door, drape, drawer, email, embassy, enquiry, envelope, evening, exhibition, eye, eyelid, facility, factory, faucet, festival, file, fire, flap, flask, frontier, gate, gift, hatch, headquarters, hearing, heart, hood, inquest, institute, jar, jaw, lead, letter, lid, lock, loophole, mail, meeting, menu, mind, mouth, museum, negotiation, newspaper, office, package, packet, palm, parachute, parcel, phase, pocketbook, pore, post, practice, present, purse, railway, refrigerator, refuge, restaurant, rucksack, safe, season, shade, shop, showroom, shutter, soda, station, store, subsidiary, suitcase, talk, thread, trunk, umbrella, valve, vault, vein, vent, wallet, wardrobe, window, wing, work, zip

be, gape, hang, lie, stand
She stared at him, her mouth hanging open.
The book lay open in front of him.
The door stood open.

burst, creak, fall, flutter, fly, shoot, slide, snap, swing
The bag fell open.
Suddenly the door flew open.
The gate swung open.

remain
break sth, cut sth, fling sth, flip sth, get sth, prise/prize sth (esp. BrE), pry sth (esp. AmE), pull sth, push sth, rip sth, tear sth, throw sth, wrench sth, yank sth
She flung the door open and rushed in.
She flipped open Chris's diary.
I tried to pry open the locket.
He tore the letter open.

have sth, hold sth, keep sth, leave sth
She held the door open for them.

find sth, see sth
I found the door open.

fully, wide
The door was wide open.

partially
slightly

be, seem

extremely, fairly, very, etc.
completely

about
She's very open about her mistakes.

with
I don't think you've been completely open with me.

be
remain, stay
In spite of the snow, the roads remained open.
Some of the supermarkets stay open till ten.

keep sth
We want to keep the school open.

to
The pool is only open to residents.

be
declare sth (esp. BrE)
The Australian premier declared the Olympic Games open.

officially
The bridge is officially open now.

Open is used with these nouns:
acknowledgement, admiration, admission, aggression, arm, ballot, bar, boat, border, carriage, casket, collar, combat, communication, communion, competition, conflict, confrontation, contempt, contest, country, countryside, courtyard, curiosity, curtain, cut, debate, deck, defiance, desert, dialogue, disbelief, discussion, display, ditch, door, doorway, drawer, ear, election, enquiry, enrolment, evening, expanse, expression, face, field, fire, fireplace, flame, flower, forum, gate, goal, grave, ground, hand, hatch, hearing, hill, hillside, hostility, invitation, jaw, kitchen, land, letter, market, marriage, meeting, microphone, mind, moor, mouth, neck, ocean, palm, pit, plain, pore, prairie, prison, question, razor, rebellion, revolt, road, sandal, sandwich, sea, season, seat, secret, session, set, shelf, shutter, sky, slope, society, sore, space, stretch, string, suitcase, surgery, system, talk, tender, terrain, tournament, truck, verdict, vowel, wagon, ward, warfare, water, window, wound

Open is used with these verbs:
drop, shoulder, shove