Is “Weakliest” a Scrabble word?
Yes
WEAKLIEST
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 Weakliest
adjective
1.Frail, sickly or of a delicate constitution; weak.
“1885, I lay in weakly case and confined to my bed for four months before I was able to rise and health returned to me. — Sir Richard Burton, The Book of the Thousand Nights and a Night, Night 18”