Where does “lucrāre” come from?

lucrāre (Latin) comes from Latin lucror, from Latin lucrum, from Proto-Indo-European leh₂w- — to seize, gain; benefit, prize.

Ancestry of “lucrāre”, step by step

Step	Language	Word	Meaning
1	Latin	lucror	I gain, acquire, profit; I gain by economy, save
2	Latin	lucrum	profit, advantage; love of gain, avarice
3	Proto-Indo-European	leh₂w-	to seize, gain; benefit, prize

lucrāre — Etymology, Origin & Word History | Etymology Explorer