Barely useful; almost worthless or pointless, but nevertheless better than having nothing at all.

Extremely stupid.

(humorous) Alternative form of dead as a doornail

Alternative form of larger than life

Synonym of larger than life

(idiomatic) Alternative form of slow as molasses

(simile) Unquestionably dead / (simile) Extremely old-fashioned.

(idiomatic) Very much under the influence of drugs

(informal) stingy with money

that is lighter than air, describing materials or aircraft.