desuetude \DES-wih-tood, -tyood\, noun:
The cessation of use; discontinuance of practice or custom; disuse.

anard \kuh-NAHRD\, noun:
1. An unfounded, false, or fabricated report or story.
2. A horizontal control and stabilizing surface mounted forward of the main wing of an aircraft.
3. An aircraft whose horizontal stabilizer is mounted forward of the main wing.

malediction \mal-uh-DIK-shun\, noun:
A curse or execration.

dictum \DIK-tuhm\, noun:
1. An authoritative statement; a formal pronouncement.
2. Law) A judicial opinion expressed by judges on points that do not necessarily arise in the case, and are not involved in it.

panoply \PAN-uh-plee\, noun:
1. A splendid or impressive array.
2. Ceremonial attire.
3. A full suit of armor; a complete defense or covering.

argot \AHR-go; -gut\, noun:
1. A specialized and often secret vocabulary and idiom peculiar to a particular group.
2. A secret language or conventional slang peculiar to thieves, tramps, and vagabonds.