Longman Dictionary of Contemporary English homepage

however

1 adverb
     
how‧ev‧er1 S2 W1
1 used when you are adding a fact or piece of information that seems surprising, or seems very different from what you have just said [= nevertheless]:
This is a cheap and simple process. However there are dangers.
an extremely unpleasant disease which is, however, easy to treat
2 used to say that it does not matter how big, good, serious etc something is because it will not change a situation in any way [= no matter how]:
You should report any incident, however minor it is.
We have to finish, however long it takes.
however much/many
I really want the car, however much it costs.
3 especially British English used to show surprise when you ask how something happens or how someone does something:
However did he get that job?

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