rheumatoid(s = adj.all) arthritic, creaky, rheumatic, rheumy - of or pertaining to arthritis; "my creaky old joints"; "rheumy with age and grief"

rheumatoid, adj. having the character of rheumatism.

Idiom:
rheumatoid arthritis a chronic progressive disease causing inflammation and stiffening of the joints.

juvenile rheumatoid arthritis, rheumatoid arthritis, rheumatoid factor, rheumatoid spondylitis