throw into great confusion or disorder; "Fundamental Islamicists threaten to perturb the social order in Algeria and Egypt"
disturb in mind or make uneasy or cause to be worried or alarmed; "She was rather perturbed by the news that her father was seriously ill"
cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull; "The orbits of these stars were perturbed by the passings of a comet"
disturb or interfere with the usual path of an electron or atom; "The electrons were perturbed by the passing ion"
eject or send out in large quantities, also metaphorical; "the volcano spews out molten rocks every day"; "The editors of the paper spew out hostile articles about the Presidential candidate"
not dependent on or conditioned by or relative to anything else
not contingent
free from external control and constraint; "an independent mind"; "a series of independent judgments"; "fiercely independent individualism"; "an independent republic"
(of a clause) capable of standing syntactically alone as a complete sentence; "the main (or independent) clause in a complex sentence has at least a subject and a verb"
the act of allowing; "He objected to the allowance of smoking in the dining room"
a permissible difference; allowing some freedom to move within limits
an amount added or deducted on the basis of qualifying circumstances; "an allowance for profit"
an amount allowed or granted (as during a given period); "travel allowance"; "my weekly allowance of two eggs"; "a child's allowance should not be too generous"
underestimate the real value or ability of; "Don't sell your students short--they are just shy and don't show off their knowledge"
sell securities or commodities or foreign currency that is not actually owned by the seller, who hopes to cover (buy back) the sold items at a lower price and thus to earn a profit