Similar:
prospective,
might-be,
potential,
in posse,
eventual,
potentional,
would-be,
tentative,
maybeish,
contingent,
more...
Opposite:
▸ Words similar to is-to-be
▸ Usage examples for is-to-be
▸ Idioms related to is-to-be
▸ Wikipedia articles (New!)
▸ Words that often appear near is-to-be
▸ Rhymes of is-to-be
▸ Invented words related to is-to-be