What is a synonym for fortuitous?

Here are some synonyms for "fortuitous," depending on the specific nuance you want to convey:

General Synonyms:

* Lucky

* Chance

* Accidental

* Unexpected

* Happening by chance

* Serendipitous (implies a fortunate outcome)

More Formal Synonyms:

* Propitious (favorable, auspicious)

* Auspicious (promising success)

* Fortunate

* Happening by accident

Less Formal Synonyms:

* Lucky break

* Stroke of luck

* Happening by coincidence

The best synonym for "fortuitous" will depend on the context of your sentence and the specific meaning you want to convey.