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appellant (n.): late 14c., Anglo-French, from Old French apelant, noun use of present participle of apeler, from Latin appellare (see appeal).
appellate (adj.): "pertaining to appeals," 1726, from Latin appellatus, past participle of appellare (see appeal). Appellate jurisdiction is in Blackstone (1768).
appellation (n.): late 15c., "action of appealing" (to a higher authority), from Old French apelacion (13c.), from Latin appellationem (nominative appellatio) "an addressing, accosting; an appeal; a name, title," noun of action from past participle stem of appellare (see appeal). Meaning "designation, name given to a person, thing, or class" is from mid-15c., from a sense also found in Middle French appeler.
appellative (adj.): mid-15c., from Latin appellativus, from appellat-, past participle stem of appellare (see appeal). As a noun, attested from 1590s.
appellee (n.): 1530s, from Anglo-French (late 14c.), from Old French apelé (Modern French appelé) "accused, defendant," noun use of past participle of appeler "to call, address;" see appeal + -ee.
cappella: see a cappella.
rappel (n.): 1931, "mountaineering technique for descending steep faces," from French rappel, literally "recall" (Old French rapel), from rapeler "to recall, summon" (see repeal (v.)). The same word had been borrowed earlier (1848) to mean "a drum roll to summon soldiers."
rappel (v.): 1957 in the mountaineering sense; see rappel (n.). Related: Rappeled; rappelling.
a cappella: "(With reference to choral music) sung without instrumental accompaniment", Italian, literally 'in chapel style'. More chapel from Middle English:The first place to be called a chapel was named after the holy relic preserved in it, the cape of St Martin. The Latin word cappella, meaning ‘little cape’, was applied to the building itself and eventually to any holy sanctuary. Chaplain (Middle English) is a related word, which referred initially to an attendant entrusted with guarding the cape. The Latin form remains unchanged in the musical term a cappella, which means ‘sung without instrumental accompaniment’ but is literally ‘in chapel style’. See also cap