This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. Simple past tense and past participle of knock.

"Three years on from their last album – and a year after their label knocked back a proposed second – Klaxons were finally due back."

knocked    knocking    knocks   

strike    critique    criticism    knap    rap    bump    blow    sound    go    impinge on   

censure    to knock into a cocked hat    to knock about    to knock spots out of    to knock out    to knock off    to knock down    to be knocked off    to knock under    to knock down fares   

knock someone's socks off   

rap    astonish    criticise    disparage    blow    jar   

Bach    Bangkok    Bloch    Block    Brock    Doc    Dock    Glock    Iraq    Jacques   

rap    tap    shake    clap    thud    summon    slap    tug    footstep    push