"Feign" means "to pretend" or "represent fictitiously."
Considering it's both a transitive and intransitive verb, it can be
used in a couple different ways in a sentence. You could say, "She
feigned illness to skip school" or "She's feigning; she isn't
really ill." In the first example, "feigned" is transitive, meaning
the verb has an object--it's directing its action to or for someone
or something. Ask yourself, "Whom or what did she feign?" The
answer is "illness." In the second example, "feigning" is
intransitive--it does not have an object. To sum up, you can use
"feign" in a couple different ways. Go to www.dictionary.com and
search "feign" for more.