It depends on which opposite you mean. Three possibile meanings are "stole", "received for free" or "sold."
Sell
An antonym is a word with the opposite meaning, but some "opposites" go in different directions. So two antonyms for "purchased" might be "sold", or "gave away".
what word is opposite of prudent
The opposite of anything is it's absence. Silence would be the opposite of a word spoken.
Opposite word of light
The word 'surf' does not have a opposite word.
There is no opposite to cobble.
which is the opposite to the word satisfaccion
The opposite of the word "answer" is "question."
This word does not have an opposite.
If by 'opposite' you mean the word for someone of the opposite sex who has the same state or condition expressed in the word, then the opposite of 'bachelorette' is 'bachelor'.
injustice.The opposite word for justice is the word injustice.
The opposite of the word arrogantly would be humbly.