"arthritic" in the noun sense
1. arthritic
a person afflicted with arthritis
"the hands of an elderly arthritic"
"arthritic" in the adjective sense
1. arthritic, creaky, rheumatic, rheumatoid, rheumy
of or pertaining to arthritis
"my creaky old joints"
"rheumy with age and grief"
Source: WordNet® (An amazing lexical database of English)
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