Unless Meaning in Bengali

What is the meaning of word Unless in Bengali/Bangla ?

Defenition of word Unless

• except if (used to introduce a case in which a statement being made is not true or valid).

Example

manuscripts cannot be returned unless accompanied by a self-addressed envelope

Other Meaning of Unless

• CONJUNCTION

  যদি না unless if not but nisi or else

• MORE

  সেরকম না হলে unless
  যদি তা না হয় unless
  তা না হলে unless