weak as a kitten

Idioms  

1. Feeble and fragile, as in After that bout with flu she was weak as a kitten. This simile has largely replaced weak as a cat, from the early 1800s.

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Example Sentences

Arrived home at 10pm weak as a kitten and stayed in bed for a week after.

From The Guardian • Dec. 30, 2016

The dream had left him weak as a kitten.

From "A Game of Thrones" by George R.R. Martin

"This one has done me up; I feel weak as a kitten, meek as a lamb."

From The Diamond Coterie by Lynch, Lawrence L.

It was a bad bout, but on the fifth day it left me, and I lay, as weak as a kitten, staring at the rafters and the little skylight.

From Greenmantle by Buchan, John

He was delirious and as weak as a kitten.

From The Note-Book of an Attaché Seven Months in the War Zone by Wood, Eric Fisher