[adj] weak and feeble; "I'm feeling seedy today"
[adj] lacking firmness of will or character or purpose; "infirm of purpose; give me the daggers" - Shakespeare
[adj] lacking physical strength or vitality; "a feeble old woman"; "her body looked sapless"
[adj] confined to bed (by illness)
bedfast, bedrid, bedridden, debilitated, decrepit, enfeebled, feeble, frail, ill, irresolute, sapless, seedy, sick, sick-abed, unhealthy, weak, weakly