dodoism

noun, plural do·dos, do·does.

1. any of several clumsy, flightless, extinct birds of the genera Raphus and Pezophaps, related to pigeons but about the size of a turkey, formerly inhabiting the islands of Mauritius, Réunion, and Rodriguez.
2. Slang. a dull-witted, slow-reacting person.
3. a person with old-fashioned, conservative, or outmoded ideas.
4. a thing that is outmoded or obsolete.

noun plural dodos or dodoes

1. any flightless bird, esp Raphus cucullatus, of the recently extinct family Raphidae of Mauritius and adjacent islands: order Columbiformes (pigeons, etc). They had a hooked bill, short stout legs, and greyish plumageSee also ratite
2. informal an intensely conservative or reactionary person who is unaware of changing fashions, ideas, etc
3. (as) dead as a dodo (of a person or thing) irretrievably defunct or out of date