darn
...a darn whether you come or not

give
...a damn whether he comes or not

hold
...I wonder whether he has any hold of the subject

issue
the issue is whether...

jury
the jury is out on whether....

like
whether you like it or not

moment
it is of no moment whether...

or
you must do it, whether you like or not

query
I query whether this can be true

question
the question is whether...

toss-up
...a toss-up whether she comes or not

uncertain
it's uncertain whether...

unclear
I'm unclear whether...

whether
...be doubtful whether... / to be in doubt

wonder
I wonder whether she will come