Frequency - Word Form
   1 un-measurable
   4 unable
   1 unalterable
   1 unassuming
   2 und
   5 under
   1 understand
   2 understood
   2 undertake
   1 undertaken
   1 undertook
   1 undoubtedly
   1 unfavourable
   1 unfortunate
   4 university
   1 unknown
   2 unless
   1 unparalleled
   6 until
  18 up
   1 upheld
  21 upon
   3 upper
   1 upper-hand
   1 upsala
   1 upwards
   6 us
   9 use
  14 used
   6 useful
   2 usefulness
   1 useless
   1 users
   2 using
   1 usually
   2 utilise
   1 utilize
   1 utilized
   1 utmost