# Perturbed, the - the perturbed ep - Perturbed Synonyms, Perturbed Antonyms | Thesaurus.com

With its per- prefix, perturb meant originally "thoroughly upset", though today the word has lost most of its intense edge. Perturb and perturbation are often used by scientists, usually when speaking of a change in their data indicating that something has affected some normal process. When someone is referred to as imperturbable , it means he or she manages to remain calm through the most trying experiences.

The late Texas Gov. Ann Richards was a frequent visitor to the Drafthouse in Austin, and the star of its greatest-ever 'Don't Talk' PSA.

1660s, "to make a joke," from Latin iocari "to jest, joke," from iocus (see joke (n.)). Related: Joked ; joking .

The prime minister in turn has slammed his siblings for spreading “baseless accusations” and taking public a private family dispute.

with 0 < ε < < 1 {\displaystyle 0<\varepsilon <\!\!<1} . The second equation indicates that the dynamics of x 2 {\displaystyle x_{2}} is much faster than that of x 1 {\displaystyle x_{1}} . A theorem due to Tikhonov [5] states that, with the correct conditions on the system, it will initially and very quickly approximate the solution to the equations