knock is a valid English word

Scrabble validity: valid ( international - Sowpods, US - Twl06 )
iScramble validity: valid
QuickWords validity: valid

Meanings

Noun (COUNTABLE AND UNCOUNTABLE)

An abrupt rapping sound, as from an impact of a hard object against wood.
• I heard a knock on my door.
A sharp impact.
• He took a knock on the head.
(figuratively) A criticism.

Verb

(intransitive) To rap one's knuckles against something, especially wood.
• Knock on the door and find out if they’re home.
(transitive dated) To strike for admittance; to rap upon, as a door.
(transitive colloquial originally US) To criticize verbally; to denigrate; to undervalue.
• Don’t knock it till you’ve tried it.

knock is a Scrabble valid word

knock

• International English (Sowpods) - The word is valid in Scrabble ✔
• US English (TWL06) - The word is valid in Scrabble ✔
• 00 points

knock is an iScramble, QuickWords valid word

knock

• The word is valid in iScramble ✔
• The word is valid in QuickWords ✔
• 00 points

Same letters words (Anagrams)

• none

Same letters plus one

• KNOCKO
• KNOCKS
• KNOCKT
• KNOCKY

Same letters minus one

• CONK
• KOCK
• KONK
• NOCK