to memorize something perfectly
কোনো কিছু মুখস্থ জানা
"She knows all the poems by heart."
"সে সব কবিতাই মুখস্থ জানে।"
to know someone very well
something that seems promising at first but fails to deliver
to speak very highly about someone’s abilities or achievemen...
to make a bad situation even worse
to make something definite or certain
I am the one responsible; I will take responsibility.