Maybe, which is defined as Perhaps or Possibly, is not a word I like to hear in response to a proposal.  It puts off the eventual answer and frustrates me.

In the words of The Chantels:

Maybe, if I hold your hand
You will understand
And maybe, if I kissed your lips
I’ll be at your command
Oh, maybe.

Buddy Holly had it even better when he sang:

Maybe baby, I’ll have you
Maybe baby, you’ll be true
Maybe baby, I’ll have you for me (all for me)

Whatever the context, unless we are engaged in negotiations, please don’t say Maybe!