I . a.
1.
Weak, of no weight, of no force.
2.
( Law .) Void, null, of no legal force, null and void.
3.
Unsound, unfounded, baseless, untrue, fallacious, that does not hold ( good ).
II . a.
Weak, feeble, infirm, sick, sickly, weakly, frail, valetudinary.
III . n.
Valetudinarian, feeble person, infirm person, sick person.