In Verbs^x, Negations^x, Football^x

Grammatical justification? What is it? What form would a grammatical justification take? The presence of thousands of instances of it, as on Google? No, I don't think that's what you mean. An analysis of what part of speech each of the words is? No, I don't think that's what you mean....

Mister Micawber wrote: It just reflects its position as a marginal modal. The negation is as with others of its group: I dare not play I ought not to play I need not play I used not to play You will note that all of these verbs have various forms of variable respectability. How can "used...

It just reflects its position as a marginal modal. The negation is as with others of its group: I dare not play I ought not to play I need not play I used not to play You will note that all of these verbs have various forms of variable respectability.