Nouns formed from phrasal verbs

While I've been quite in a mood these days of writing about phrasal verbs and idioms, reports of the shoot-down of the Malaysia Airlines Flight 17 and of investigations into that international tragedy have quite incidentally sped it up.

As shoot-down above, many phrasal verbs of the form verb + particle or verb + preposition can be used as nouns. For some phrasal verbs, when they are used as nouns the elements are hyphenated, as in

shoot-down
break-up
hold-up

while some other phrasal verbs are written as single words for them to be nouns, e.g.

comeback
showdown
breakthrough.

Some phrasal verbs nominalize both by hyphenating the elements and by running them on as single words:

back-up, backup
make-up, makeup
set-up, setup

Some phrasal verbs transpose the positions of the elements and spell out together as single words to form nouns:

backlash (from lash back)
downfall (from fall down)
outlook (from look out)
outbreak (from break out)
outburst (from burst out)

Test your knowledge of nouns formed from phrasal verbs here.