from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Foolish; absurd; ridiculous; inclined to incessant merriment or laughter.
from the GNU version of the Collaborative International Dictionary of English
- adj. Given to laughter; inclined to foolish or incessant merriment.
from The Century Dictionary and Cyclopedia
- Pertaining to the town of Abdera or its inhabitants; resembling or recalling in some way the philosopher Democritus of Abdera (see Abderite); hence, given to incessant or continued laughter.
From Abderian, from Abdera (the town in Thrace where Democritus, the Laughing Philosopher, lived) + -ian. (Wiktionary)