The suffix entered English medical usage in the 1800s as -y (noun-forming suffix), used to form abstract condition/state nouns from Greek and Latin roots, often adapting the Latin -ia or Greek -ία ending into the native English -y pattern. The root -y (“condition”) connects -y to the entire condition and state suffixes: astheny (asthen- + -y→ condition of weakness), cachexy (cachex- + -y → condition of bad nutrition/emaciation), and arthralgy (arthro- + alg- + -y → condition of joint pain). The noun-forming suffix-y is productive in medicine, pathology, and general clinical description: e.g., dyspnea (cf. dyspnoea→dyspnea), somnolency (cf. -ence), febrility (cf. -ity), and cachexy.