I am looking for a word that means that something will improve with double, triple etc. speed, but not be that specific.
Example:
The new trains will increase the speed by multiple times compared to the old ones.
Is this a good use of "multiple times" and is it interpreted that the speed will increase with approximately 2+ times?
Best Answer
The word manifold does not fit there. Barmar just missed it! The proper word there is manyfold.
As you are concerned, this does not tell something being increased by some figure (double etc.) but talks about several times/folds the speed is increased. As John suggests, it can be specific like two-fold, three-fold and so on but then it will take the preposition by. Note that manyfold does not require that as it includes it in its meaning.
Having this said, after changing the structure, the sentence can be...