Is “Knacker” a Scrabble word?
Yes
KNACKER
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Knacker
noun
1.One who makes knickknacks, toys, etc.
2.One of two or more pieces of bone or wood held loosely between the fingers, and struck together by moving the hand; a clapper.
3.A harness maker.
verb
1.(UK slang) To tire out, exhaust.
“Carrying that giant statue up those stairs knackered me out”
2.(UK slang) To reprimand.
“Digital giants Dstv and Vision Group’s Bukedde Television didn’t go untouched with the former lashed for laxities in re-connection especially in cases where a subscriber renewed their subscription by Mobile Money, while the latter got knackered for promoting witchcraft and witch doctors. ( http//trumpetnews.co.ug/2017/03/16/1615/ )”