IPA: /lɑːrˈsɛnəsli/
KK: /lɑrˈsɛnəsli/
In a way that involves stealing or theft.
He larcenously took the money from the cash register.
Larcenously → It is formed from "larceny" (from Old French *larcinerie*, meaning theft) and the suffix "-ously" (meaning in a manner characterized by). The word "larcenously" means in a manner characterized by theft or stealing.
Think of 'larceny' as a way to remember that 'larcenously' describes actions that are done in a stealing manner.