It forms all or part of: Abitur; adit; ambience; ambient; ambit; ambition; ambitious; andante; anion; cation; circuit; coitus; commence; commencement; concomitant; constable; count (n.1) title of nobility; county; dysprosium; errant; exit; initial; initiate; initiation; introit; ion; issue; itinerant; itinerary; janitor; January; Janus; Jena; Mahayana; obiter; obituary; perish; praetor; Praetorian; preterite; sedition; sudden; trance; transient; transit; transitive; viscount.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit e'ti "goes," imas "we go," ayanam "a going, way;" Avestan ae'iti "goes," Old Persian aitiy "goes;" Greek ienai "to go;" Latin ire "to go," iter "a way;" Old Irish ethaim "I go," Irish bothar "a road" (from *bou-itro- "cows' way"), Gaulish eimu "we go;" Lithuanian eiti "to go;" Old Church Slavonic iti "go;" Bulgarian ida "I go;" Russian idti "to go;" Gothic iddja "went."
"one who or that which raps" in any sense, 1610s; see rap (v.)). It could mean "door-knocker" (1630s), "spirit-rapper" (1755), "professional perjurer" (1840), prison slang for "prosecutor" in prison slang (1904), "itinerant antiques buyer," with a tinge of shadiness (1914). The hip-hop performance sense emerged c. 1979. Rapster is from 1772.
"pilgrim; itinerant monk going from shrine to shrine under a perpetual vow of poverty;" originally "pilgrim who has returned from the Holy Land," c. 1300, palmere (mid-12c. as a surname), from Anglo-French palmer (Old French palmier), from Medieval Latin palmarius, from Latin palma "palm tree" (see palm (n.2)). So called because they wore palm branches in commemoration of the journey. "The distinction between pilgrim and palmer seems never to have been closely observed" [Century Dictionary].