what is a five letter english word that is pronounced the same when
its last four letters have been removed?

Hi happyrob1234,

Thanks for an entertaining question.

The answer would be "queue". Taking away the "ueue", the Q remains.

The same question was asked at the 'Mad Science Nation' website: 
"9. What five letter English word does not change its pronunciation
when four letters are taken away?"
http://www.mad.scientist.org/fun/puzzles92901.html

The answer can be found here:
http://www.mad.scientist.org/fun/puzzles92901_a.html

Search words used:
five letter english word pronounced same last four letters removed

I hope this was helpful. If you have any questions regarding my
answer, please don't hesitate to ask before rating.
Best regards,
rainbow-ga

ok

Reminds me of the very old joke about which four letters spell out a
hungry horse - mtgg

For those who haven't a clue what this is about -
http://www.wordwizard.com/clubhouse/founddiscuss.asp?Num=2249

"Aitch" is an English five-letter word that is pronounced the same
when its *first* four letters have been removed.

markj-ga

I may be mistaken but if only one letter is removed from the end of
queue, its pronunciation does not change.  If one letter is removed
from queu, its pronunciation remains unchanged.  If one letter is
removed...