* Coincidental: This emphasizes the simultaneous occurrence but doesn't necessarily imply meaning.
* Simultaneous: This simply refers to happening at the same time.
* Contemporaneous: Similar to simultaneous, but often suggests a more formal or historical context.
* Serendipitous: This emphasizes the element of chance discovery or fortunate coincidence.
* Fortuitous: This implies a lucky or unexpected coincidence.
* Propitious: This suggests that the coincidence is favorable or auspicious.
* Meaningful: This highlights the significance of the coincidence.
* Symbolic: This suggests that the coincidence has a deeper meaning or symbolism.
The best synonym for "synchronistic" will depend on the specific situation and the intended meaning.