If resolve means determination or firmness of purpose:
* Indecision
* Hesitation
* Uncertainty
* Irresolution
* Weakness
* Wavering
* Vacillation
If resolve means to solve or settle a problem:
* Complicate
* Exacerbate
* Aggravate
* Worsen
* Prolong
If resolve means to decide or make a firm decision:
* Postpone
* Delay
* Procrastinate
* Undecided
Other possibilities:
* Abandonment
* Giving up
* Surrender
* Compromise
It's important to consider the specific context to choose the most appropriate antonym.