knock

When you knock, you bump or strike someone or something. When you hear a knock at the door, someone on the other side is thumping it with their knuckles.

You can accidentally knock your grandmother's special glass bowl off the table, and you can also knock softly on her door — or tap with your knuckles — before you go in and tell her how sorry you are. If a car engine knocks, it makes a rattling or rapping sound. Colloquially, to knock something is to reject or criticize it, and if you do, you may hear the phrase, "Don't knock it until you try it!"

Primary Meanings of knock

1.
vn
deliver a sharp blow or push :"He knocked the glass clear across the room"
the act of hitting vigorously
2.
vn
find fault with; express criticism of; point out real or perceived flaws
negative criticism
3.
n
a bad experience
Full Definitions of knock
1

v deliver a sharp blow or push :"He knocked the glass clear across the room"

Synonyms:
strike hard
Type of:
strike
deliver a sharp blow, as with the hand, fist, or weapon

v knock against with force or violence

Synonyms:
bump
Type of:
collide with, hit, impinge on, run into, strike
hit against; come into sudden contact with

v make light, repeated taps on a surface

Synonyms:
pink, rap, tap
Type of:
go, sound
make a certain noise or sound

v rap with the knuckles

knock on the door”
Type of:
knap, rap
strike sharply

v sound like a car engine that is firing too early

Synonyms:
ping, pink
Type of:
go, sound
make a certain noise or sound

n the act of hitting vigorously

Synonyms:
belt, rap, whack, whang
Type of:
blow
a powerful stroke with the fist or a weapon

n a vigorous blow

“the sudden knock floored him”
Synonyms:
bang, bash, belt, smash
Type of:
blow, bump
an impact (as from a collision)

n the sound of knocking (as on a door or in an engine or bearing)

Synonyms:
knocking
Type of:
sound
the sudden occurrence of an audible event
2

v find fault with; express criticism of; point out real or perceived flaws

“Don't knock the food--it's free”
Synonyms:
criticise, criticize, pick apart
Antonyms:
praise
express approval of
Types:
show 32 types...
hide 32 types...
censure, criminate, reprimand
rebuke formally
blast, crucify, pillory, savage
criticize harshly or violently
admonish, reprove
take to task
bawl out, berate, call down, call on the carpet, chew out, chew up, chide, dress down, have words, jaw, lambast, lambaste, lecture, rag, rebuke, remonstrate, reprimand, reproof, scold, take to task, trounce
censure severely or angrily
reprehend
express strong disapproval of
deplore
express strong disapproval of
belabor, belabour
attack verbally with harsh criticism
come down
criticize or reprimand harshly
denounce
speak out against
blame, find fault, pick
harass with constant criticism
belittle, disparage, pick at
express a negative opinion of
nitpick
be overly critical; criticize minor details
assail, assault, attack, lash out, round, snipe
attack in speech or writing
harsh on
criticize harshly
castigate, chasten, chastise, correct, objurgate
censure severely
brush down, tell off
reprimand
animadvert
express blame or censure or make a harshly critical remark
fulminate, rail
criticize severely
abuse, blackguard, clapperclaw, shout
use foul or abusive language towards
claw
attack as if with claws
pan, tear apart, trash
express a totally negative opinion of
discredit, disgrace
damage the reputation of
deprecate, depreciate, vilipend
belittle
vitriol
subject to bitter verbal abuse
rip
criticize or abuse strongly and violently
whang
attack forcefully
barrage, bombard
address with continuously or persistently, as if with a barrage
blister, scald, whip
subject to harsh criticism
condemn, decry, excoriate, objurgate, reprobate
express strong disapproval of
belittle, denigrate, derogate, minimize
cause to seem less serious; play down
accurse, anathematise, anathematize, anathemise, anathemize, comminate, execrate
curse or declare to be evil or anathema or threaten with divine punishment
rubbish
attack strongly
Type of:
comment, notice, point out, remark
make or write a comment on

n negative criticism

Synonyms:
roast
Type of:
criticism, critique
a serious examination and judgment of something
3

n a bad experience

“the school of hard knocks
Type of:
bad luck, misfortune
unnecessary and unforeseen trouble resulting from an unfortunate event

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