1 strike, hit, rap, thwack, whack, thump, bang, tap:
Knock on the door. He knocked the man on the head with his walking-stick.
2 Colloq criticize, deprecate, carp or cavil at, disparage, put down, run down:
Don't knock something till you've tried it.
3 knock about or around.
(a) wander, roam, ramble, rove, travel, gad about:
She's going to knock about the world for a bit before settling down.
(b) associate with, consort with:
He was only knocking about with some of the boys.
(c) discuss, debate, talk over, Colloq kick about or around:
I have a business proposition that I want to knock around with you.
(d) beat (up), maltreat, mistreat, maul, manhandle, batter, abuse, hit, strike:
He's been known to knock his wife about.
4 knock down.
(a) raze, demolish, destroy, level, wreck, lay in ruins, throw or pull down:
They knocked down those beautiful old houses and erected an ugly office block in their place.
(b) fell, floor, cut down:
As soon as he got up, McCloskey knocked him down again.
5 knock off. Colloq
(a) stop work(ing), quit, go home, clock off or out, terminate, lock up, close down:
I think I'll knock off for a few hours' rest.
(b) steal, pilfer, thieve, rob, Colloq lift, Brit pinch, Slang Brit nick, US knock over:
Two men in balaclavas knocked off the bank in the High Street.
(d) make quick or short work of, complete, finish, bring to an end, Colloq polish off:
He knocked off that book in a week.
(e) US copy, imitate:
They knock off expensive items, then sell them for much less than the originals
6 knock out.
(a) knock or render unconscious, floor, prostrate, trounce, whip, Slang flatten, K.O. or kayo:
The smart money says that the challenger will knock out the champion in the third round.
(b) overwhelm, overcome, daze, stagger, astound, astonish, bewilder, stun, Colloq bowl over, blow (someone's) mind, Slang Brit knock for six:
She'll really knock them out in that dress!
7 knock up.
(a) knock or put together, improvise:
I think I can knock up something quickly that will pass muster.
(b) arouse, (a)waken, wake up:
They knocked me up at dawn to go to work.
(c) Slang impregnate, get with child, make pregnant:
Her boyfriend knocked her up and then refused to marry her.
8 blow, rap, tap, thump, pounding, hammering:
I was woken by a knock on the wall from my neighbour.
9 blow, punch, jab, smack, thwack, whack, right, left, cuff, Colloq clout, bop, biff, conk:
He gave me a knock on the nose, and it started to bleed.
10 slap (in the face), censure, criticism, condemnation, slur, insult:
My latest novel took quite a few knocks from the reviewers.