Residue is a noun. An easy way to check if a word is a noun is try putting a, the or an in front of it
A residue of coffee grounds remained in the cup.
The adjective form is residual.
- There are still a few residual problems with the new computer program.
The noun form of the adjective 'comfortable' is comfortableness.The word 'comfortable' is the adjective form of the noun comfort.
The noun form of the adjective functional is functionality.The word functional is the adjective form of the noun function.
The noun form for the adjective brave is braveness.A related noun form is bravery.
The noun form of the adjective 'helpful' is helpfulness.The word 'helpful' is the adjective form of the noun help.
The noun form of the adjective 'dusty' is dustiness.The word 'dusty' is the adjective form of the noun dust.
The noun form for the adjective authentic is authenticity.
The noun form of the adjective 'dangerous' is dangerousness.The word 'dangerous' is the adjective form of the noun danger.The noun form of the adjective 'childish' is childishness.The word 'childish' is the adjective form of the noun child.The noun form of the adjective 'beautiful' is beautifulness.The word 'beautiful' is the adjective form of the noun beauty.
The noun form of the adjective 'wide' is wideness.A related noun form is width.
The noun form of the adjective 'comfortable' is comfortableness.The word 'comfortable' is the adjective form of the noun comfort.
The noun form of the adjective 'modest' is modestness.A related noun form is modesty.
The abstract noun form of the adjective unique is uniqueness.
The noun form for the adjective hilarious is hilariousness. A related noun form is hilarity.
The abstract noun form for the adjective convenient is convenience.
The noun form of the adjective 'considerate' is considerateness or consideration.
The adjective form for the noun nation is national.
The noun form of the adjective close is closeness.
The word 'weakest' is the superlative form of the adjective 'weak':positive: weakcomparative: weakersuperlative: weakest