The song Heated, which was released on Friday, contained a derogatory term that has often been used to demean people with spastic cerebral palsy.
The star's publicist told the BBC the word, which can have different connotations in the US, was "not used intentionally in a harmful way".
It "will be replaced in the lyrics", they added, without giving a timescale.
The backlash came just a couple of weeks after US pop star Lizzo apologised for using the same word in her song GRRRLS.
