Where does “tranquillity” come from?

Tranquillity derives from Middle French tranquillité, from Latin tranquillitas (state of being calm), combining trans- (across) with quillus (calm), ultimately from Proto-Indo-European terh₂- (to cross or pass through).

tranquillity (English): the state of being tranquil; the absence of...

Definitions

  1. the state of being tranquil; the absence of...

Ancestry of “tranquillity”, step by step

tranquillity traces back through two separate lines of ancestry.

via Middle English tranquillite

StepLanguageWordMeaning
1Middle Englishtranquillitepeaceableness, tranquility
2Old Frenchtranquillite—
3Latintranquillitāsquietness, calmness, stillness, tranquillity, serenity
4LatinTranquillusquiet, calm, still, tranquil
5Latintrānsquīlus—
6Latinquiēsthe rest of sleep, repose
7Proto-Italickʷiētis—
8Proto-Indo-Europeankʷyéh₁tis—
9Proto-Indo-Europeankʷyeh₁-to rest; rest, peace

via English tranquil

StepLanguageWordMeaning
1EnglishtranquilFree from emotional or mental disturbance; Calm;...
2Middle Frenchtranquille—
3Latintranquillisdative masculine plural of tranquillus; dative...

Words derived from “tranquillity”

Every word from Proto-Indo-European kʷyeh₁- →Every word from Proto-Indo-European kʷyéh₁tis →Every word from Proto-Italic kʷiētis →