speaking clearly.
It really depends on what form of writing you are talking about. If your talking in past tense then it is 'stumbled' as in "He stumbled backwards." But if you are talking in present tense then you would use 'stumble' as in "I stumble backwards." I hope that helped :)
I stumbled over a stone in the dark and almost fell.
There is no direct antonym for a thing that isn't there.
There is no antonym to pronoun.
The antonym for "transcribe" is "dictate".
It really depends on what form of writing you are talking about. If your talking in past tense then it is 'stumbled' as in "He stumbled backwards." But if you are talking in present tense then you would use 'stumble' as in "I stumble backwards." I hope that helped :)
If you're talking about "to schedule", then the antonym can be "cancel".
That depends on if you are talking about the noun or the adjective. The noun does not have an antonym. The adjective, however, does have an antonym and it is elective, optional, or voluntary.
Average (when talking about the speed).
An Antoym is the opposite of the thing you are talking about.
A flying slope if you are talking about the ship...
If you're talking about the adjective, tight. If you're talking about the way a person acts, unchaste.
Well that depends on what you are comparing it to. It could be a synonym if you're talking about a sunrise or something, and an antonym if you're talking about a sunset. I guess long as you actually no the difference between a synonym and antonym, then you should be able to figure it out with some kind of logic in mind.
Talking about Microsoft, is cut, but in real life it is to take off.
stumbled
If you mean the breadth of an object, then the antonym would be height. If you're talking about the sheer magnitude of an object then suitable antonyms would be: littleness, smallness, tininess
No, stumbled is the past tense of the VERB stumble