1580s, muphtie "official head of the state religion in Turkey," from Arabic mufti "judge," active participle (with formative prefix mu-) of afta "to give," conjugated form of fata "he gave a (legal) decision" (compare fatwa).
1820, "one who or that which rustles" (a leaf, a bird), agent noun from rustle (v.). The American English meaning "cattle thief" is by 1882; earlier it meant "active, efficient person" (1872).
"laborious, tedious, involving much labor," 1670s, from Latin operosus "taking great pains, laborious, active, industrious," from opus (genitive operis) "work" (from PIE root *op- "to work, produce in abundance"). Related: Operosely; operoseness; operosity (1620s).
statement acknowledging or confessing sin; Latin, literally "I have sinned;" first person singular preterite indicative active of peccare "to sin" (see peccadillo). Related: peccavimus "we have sinned;" peccavit "he has sinned."