The term 'perfectly correct' can be described by two crossword solutions: 'INERRANT' and 'deadon'. INERRANT is an adjective meaning 'without error' and is derived from the Latin word 'inerrare', which means 'to make free from error'. Deadon is an adjective meaning 'precisely accurate' and is derived from the phrase 'dead on target', which is used to describe a situation in which something is exactly as it should be. Both words accurately describe the term 'perfectly correct' and can be used interchangeably.