ETYM French rogue proud, haughty, supercilious; cf. Icel. hroekr a rook, croaker (cf. Rook a bird), or Armor. rok, rog, proud, arogant.
A deceitful and unreliable scoundrel; SYN. knave, rascal, rapscallion, scalawag, scallywag, varlet.

1. Resembling or suggesting a rogue elephant especially in being isolated, aberrant, dangerous, or uncontrollable
2. Corrupt, dishonest
3. Of or being a nation whose leaders defy international law or norms of international behavior

River about 200 miles (320 kilometers) sw Oregon rising in Crater Lake National Park and flowing W and sw into the Pacific.

To weed out inferior, diseased, or nontypical individuals from a crop plant or a field