serendipitous
se·ren·di·pitous
adjective
1.
being lucky in making unexpected and furtunate discoveries
Origin
From serendipity + -ous.
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.