the environment beneath the surface of the sea
the human mind regarded as being as unknown or as unfathomable as space
No Offense, These Words Used To Be InoffensiveMake your mother proud . . . steer clear of these words that used to be inoffensive but can now do more harm than good.
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012