Where does “nappy service” come from?

nappy service (English) comes from English nappy, from English NAP, from French napper, from French -er, from English -er, from Middle English -er, from Old French -er, from Latin -āre — he, she.

Ancestry of “nappy service”, step by step

nappy service traces back through two separate lines of ancestry.

via English nappy

StepLanguageWordMeaning
1EnglishnappyAn absorbent garment worn by a baby who does not...
2EnglishNAPAcronym of non-aggression principle; Acronym of...
3Frenchnapperto cover
4French-erForms infinitives of first-conjugation verbs
5English-erA person or thing that does an action indicated...
6Middle English-eragentive suffix; agent noun suffix
7Old French-erAlternative form of -ier, verbal suffix;...
8Latin-ārefirst conjugation
9Proto-Italic-āōForms primarily denominative verbs
10Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
11Proto-Indo-European-yétiCreates intransitive, often deponent,...
12Proto-Indo-Europeanyé-
13Chichewaiyehe, she

via English service

StepLanguageWordMeaning
1EnglishserviceAn act of being of assistance to someone; The...
2Middle Englishserviseservice; servitude; vasselage
3Old Englishserfisservice
4Old Frenchserviseservice; servitude; vasselage; church service
5Latinservitiumslavery, servitude; slaves; service
6Latin-itia-ness, -ity
7Latin-iaUsed to form a feminine abstract noun, usually...
8Latin-iusforming adjectives from nouns; nominative neuter...
9Proto-Italic-jōsForms comparative adjectives
10Proto-Indo-European-yósCreates adjectives from noun or verb stems
Every word from Chichewa iye
nappy service — Etymology, Origin & Word History | Etymology Explorer