Where does “infirmary” come from?

Infirmary comes from Latin infirmaria, derived from Latin infirmus (weak, feeble) plus the suffix -arius, ultimately from Proto-Indo-European roots meaning not and to hold.

infirmary (English): A place where sick or injured people are cared...

Definitions

A place where sick or injured people are cared...

Ancestry of “infirmary”, step by step

Step	Language	Word	Meaning
1	Medieval Latin	infirmaria	—
2	Latin	īnfirmus	weak, feeble
3	Latin	īn-	un-, non-, not
4	Latin	în	in, at, on, upon, from (space)
5	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
6	Proto-Italic	en	in
7	Proto-Indo-European	h₁én	in

Every word from Proto-Indo-European h₁én →Every word from Latin īn- →Every word from Proto-Italic en →