অর্থ : With intention. In an intentional manner.
উদাহরণ :
He used that word intentionally.
I did this by choice.
সমার্থক : advisedly, by choice, by design, deliberately, designedly, intentionally, purposely
Without intention. In an unintentional manner.
She hit him unintentionally.Without advance planning.
They met accidentally.On purpose meaning in Bengali (Bangla).