If you find good things without looking for them, serendipity — unexpected good luck — has brought them to you.
Serendipity does not come from Latin or Greek, but rather was created by a British nobleman in the mid 1700s from an ancient Persian fairy tale. The meaning of the word, good luck in finding valuable things unintentionally, refers to the fairy tale characters who were always making discoveries through chance.
Repugnant refers to something you detest so thoroughly it threatens to make you physically sick, like the idea of marrying your sister. Or wearing last year's jeans.
A repugnant thing is a thing offensive, detestable, or obscene. It can be repugnant to your mind or your morals.