Frequency - Word Form
 1 unbelievable
 1 uncomfortable
 1 underlying
 1 underrated
 3 understanding
 1 undertaking
 1 unequivocal
 2 unhappiness
 1 unhappy
 1 universal
 1 universality
 1 unknown
 2 unless
 1 untidy
 1 until
 2 unwholesome
 4 up
 1 upon
 9 us
 3 use
 1 useful
 1 using
 1 usually