• 'Thoroughly' is the meaning of the phrase - Out and out.
• Out and out - complete or in every way; used to emphasize an unpleasant quality of a person or thing; thoroughly; বাংলা অর্থ - সম্পূর্ণরূপে; পুরোপুরি।
যেমন: - That's an out-and-out lie! - The whole project was an out-and-out disaster.