1: severe snowstorm

2: short section of text, film, piece of music etc

3: military group made up of members of the civilian population

4: (adjective for) piece of writing, music etc whose author is unknown

5: someone who loves their country and is willing to suffer or die for it

6: unreal situation, imagined for purposes of theory, argument etc

7: very short and unclear view of something

8: used (or kept) at home (adjective)

9: choice between two alternatives, both unsatisfactory

10: be more important than other factors or considerations

11: unable to escape from a difficult, complicated situation; stuck

12: put your arms around someone affectionately, hug

13: good feeling coming from getting through something you were worried about

14: uprising or rebellion

15: someone who harms their country by helping its enemy

16: unfriendly

17: piece of information telling you what to do next (on computer etc)

18: reveal, make public

19: clean, remove from data anything that might show its source

20: provide confirming or verifying information, back up