Where does “rar” come from?

rar (Old Occitan) comes from Latin rarus, from Proto-Italic rāros, from Proto-Indo-European h₁r̥h₁rós, from Proto-Indo-European h₁réh₁, from Proto-Indo-European h₁er- — earth.

Ancestry of “rar”, step by step

StepLanguageWordMeaning
1Latinrarusscattered, far apart; seldom, few; rare, uncommon
2Proto-Italicrāros—
3Proto-Indo-Europeanh₁r̥h₁rós—
4Proto-Indo-Europeanh₁réh₁sparsely, rarely, loosely
5Proto-Indo-Europeanh₁er-earth
Every word from Proto-Indo-European h₁er- →Every word from Proto-Indo-European h₁réh₁ →Every word from Proto-Indo-European h₁r̥h₁rós →