1. A shaking, trembling, or concussion of the earth, sometimes slight, at other times violent, due to subterranean volcanic agency.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• eathquakes,
• earthquak,
• earthquate,
• earthwuake,
• earhquake,
• eathquake,
• earthquike,
• earthquaqe,
• earthquacke,
• earthquaake,
• earthquke,
• eartquake,
• earhtquake,
• earthwake,
• erathquake,
• earthqakes,
• earthqyake,
• erthquakes,
• earthquack,
• erthquake

• earthstar,
• earth wax.

The adjective form of the word "earthquake" is "earthquake".

The plural of the "earthquake" can be the "earthquakes".

The singular of the "earthquake" can be the "earthquake".