whether there can be
  opposite of the dimension 
such as time and space
    and would it still be a dimension?

That doesn't make sense to me.  What would be the opposite of time?

3 minutes ago, Bufofrog said:

That doesn't make sense to me.  What would be the opposite of time?

Good question 

Make up a definition.  Will it be meaningful?

16 hours ago, Mr Antykox said:

Good question 

It's not though. It shows the question isn't applicable. What's the opposite of a mile, or any other spatial measurement? Our coordinate systems measure what we observe, and we don't observe anything that would require "anti-dimensions". Not everything requires opposition.

I came up with idea many years ago, the big bang happening in two opposite time directions with anti matter in one and matter in the other. Both universes would see time running to the future but matter in the opposite big bang would act like anti mater in our and the reverse would be true. Observers in both universes would see time running the same way, from past to future. But a god like view from out side would see time running in them in opposite directions. 

Is this what you are suggesting? To be fair i found out later this had already been thought of by several scientists... 

 

Edited November 23, 20205 yr by Moontanman
Clarity