The term 'MOST GENTLE' can be described by two crossword solutions: 'TENDEREST' (9 letters) and 'TAMEST' (6 letters). Both words are adjectives that describe something as GENTLE, but 'TENDEREST' implies a greater degree of gentleness than 'TAMEST'. The word 'TENDER' is derived from the Latin word 'tener', which means 'SOFT' or 'DELICATE'. 'TAME' is derived from the Old English word 'TAM', which means 'GENTLE' or 'DOCILE'. Therefore, both words can be used to describe something as GENTLE, but 'TENDEREST' implies a greater degree of gentleness.