An argument that is weak is, by definition, uncogent....
a lowly or weak person
dilute
In an insubstantial or weak manner
the quality or state of being weak.
Weak, irregular, ineffective contraction.
A combination of good qualities, courage, honour and a readiness to assist the weak.
Frail means weak, vulnerable, easily hurt, fragile, having delicate health, easily broken, and in another sense, morally weak.
Not really, in the sense that that's not a part of the definition. In practice, it may be the case, but the real definition is that strong acids fully dissociate in dilute solution and weak acids don't.
It is when the state governments have all the power ( central government is very weak)
Using the definition 'fortification, support', antonyms would be 'weak link, weak point, weakness'. Check this page for an explanation: answers. com /topic/bulwark
This is just another way of saying that someone felt tired or weak.