What does if the worst comes to the worst mean in English?

You can learn if the worst comes to the worst Pronunciation, Grammar & Synonyms in this most authoritative English Dictionary.

if the worst comes to the worst Meaning, Definition, Pronunciation, Grammar & Synonyms❤️

0 if the situation develops in the most serious or unpleasant way:
- We should be in when you arrive, but if the worst comes to the worst, the neighbours have a spare key and will let you into the house.
1 if a bad situation becomes even worse:
- If the worst comes to the worst, we can ask Dad to send us some more money.

Otherwise, if the worst comes to the worst, all is lost.
If the worst comes to the worst, let us be guarded, and let us take care that whatever arrangement is made is clear and fool-proof.
If the worst comes to the worst, we must withdraw our support if we find things are going the wrong way.
It will constitute an obligation requiring, if the worst comes to the worst, the whole armed exertion of the nation.
If the worst comes to the worst, he must get in touch with these other people who are bulk buying and bulk trading.
If the worst comes to the worst we will be back here in four or five weeks' time for a similar debate.
Here we are merely saying that if the worst comes to the worst, we shall have to use boats.
What are we supposed to do if the worst comes to the worst?