Is there a good phrase or word that means the opposite of "coexist"?

The phrase I am using it in is similar to "these two ideas need not (be) __."


Mutually exclusive

Two things that can't happen at the same time.



"These two (noun)s need not _____"

Some ideas:

  1. Disagree
  2. Differ
  3. Conflict
  4. Contradict

Depends on the context but in many instances the opposite of coexistence is persecution.

  • 2
    Persecution isn't suitable for the context given in the question, grammatically or semantically. – Bradd Szonye Apr 23 '13 at 21:22
  • 1
    Also, exist derives from Latin existĕre, which you will note is a Latin conjugation other than the 1st (-are) conjugation — and therefore does not take -ance in English but rather -ence. These things matter. – tchrist Apr 23 '13 at 21:25
  • I didn't read the phrase. Yes, given the context, "persecution" is not a valid answer. – Jason Powell Hundley Apr 24 '13 at 20:14

"disparate" comes to mind. Fundamentally distinct or different in kind; entirely dissimilar:

"diametrically opposed" also comes to mind.

how about "at odds?" or "Immiscible".

or "irreconcilable"?

protected by user140086 Nov 3 '16 at 9:36

Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).

Would you like to answer one of these unanswered questions instead?

Not the answer you're looking for? Browse other questions tagged or ask your own question.