Once an ant was very thirsty. He went to the pond to drink water.

used to show that you think or feel the opposite of what has just been stated: "I thought you said the film was exciting?" "On the contrary, I nearly fell asleep half way through it!" I'm not angry with you. On the contrary!

On and off (মাঝে মাঝে) - It rained on and off all day.

Let your parents be obeyed

Oasis= Oases

Nobody believes a liar. (Interrogative) = Who believes a liar?

No sooner had he taken the money than he went away. 

Shakib is the best player in the team.

No one can do this. (Interrogative) = Who can do this?

No news is good news. = কোন খবর না থাকাটাই সুখবর।

Nip in the bud (destroy at beginning): অঙ্কুরে বিনষ্ট হওয়া All his hopes are nipped in the bud. তার সকল আশা অঙ্কুরে বিনষ্ট হল।

Never tell a lie. = Let not a lie ever be told.

Neumonia = Pneumonia

Neither of the two women wants their office renovated. = Neither of the two women wants her office renovated.

neibour = neighbour