The term 'not as much' can be expressed in four different ways: LESS (4 letters), lessso (6 letters), to a lesser degree (15 letters), and to a lesserextent (15 letters). The word 'LESS' is an adverb that means 'in smaller quantity or degree'. 'Lessso' is an informal way of saying 'LESS so', which means 'to a lesser extent'. 'To a lesser degree' is a phrase that means 'to a lesser extent or amount'. Finally, 'to a lesserextent' is another phrase that means 'to a lesser extent or amount'.