Where does “estudo” come from?

estudo (Portuguese) comes from Old Portuguese estudo, from Latin studium, from Proto-Indo-European (s)tewd-, from Proto-Indo-European stew- — to praise, laud.

estudo (Portuguese): study; training

Definitions

study; training

Ancestry of “estudo”, step by step

Step	Language	Word	Meaning
1	Old Portuguese	estudo	—
2	Latin	studium	study; eagerness, zeal; desire, fancy
3	Proto-Indo-European	(s)tewd-	to push, to hit
4	Proto-Indo-European	stew-	to praise, laud

Every word from Proto-Indo-European stew- →Every word from Proto-Indo-European (s)tewd- →Every word from Latin studium →