ful ---> fulness

[bieasy]

Hi,

Can all the adjectives that end with "ful" become nouns adding "ness"?
Such as: awful ---> awfulness, deceitful ---> deceitfulness, careful ---> carefulness.

[Raymott]

Hi,

Can all the adjectives that end with "ful" become nouns adding "ness"?
Such as: awful ---> awfulness, deceitful ---> deceitfulness, careful ---> carefulness.

No. For example 'beautifulness' is not used. It's 'beauty'.
You'll find that you can do it with most words, but not all.