Adjective

(en adjective)

(physics) evaporating or vaporizing readily under normal conditions.

(of a substance, informal) explosive.

(of a price etc) variable or erratic.

(of a person) quick to become angry or violent.

fickle.

temporary or ephemeral.

(of a situation) potentially violent.

(computing, of a variable) having its associated memory immediately updated with any changes in value.

(computing, of memory) whose content is lost when the computer is powered down

(obsolete) Passing through the air on wings, or by the buoyant force of the atmosphere; flying; having the power to fly.

Adjective

(en adjective)

Unchanged through time or space; permanent.

Consistently recurring over time; persistent.

* {{quote-magazine, date=2013-11-16, volume=409, issue=8862, magazine=(The Economist), author=Schumpeter

, title= The mindfulness business , passage=The constant pinging of electronic devices is driving many people to the end of their tether. Electronic devices not only overload the senses and invade leisure time. They feed on themselves: the more people tweet the more they are rewarded with followers and retweets.}}

Steady in purpose, action, feeling, etc.

* Sir (Philip Sidney) (1554-1586)

Both loving one fair maid, they yet remained constant friends.

* (William Shakespeare) (1564-1616)

I am constant to my purposes.

* (John Dryden) (1631-1700)

His gifts, his constant courtship, nothing gained.

Firm; solid; not fluid.

* (Robert Boyle) (1627-1691)

Ifyou mix them, you may turn these two fluid liquors into a constant body.

(obsolete) Consistent; logical.

* Shakespeare, Twelfth Night IV.ii

I am no more mad than you are: make the trial of it with any constant question.