Synonyms:
disturbance, perturbation, upset
Meaning: an unhappy and worried mental state; "there was too much anger and disturbance"; "she didn't realize the upset she caused me"
Usage examples
"But is that necessary?" he asked, without apparent perturbation.
Frank Spencer made an impatient gesture that showed how great was his perturbation.
I watched him narrowly for some sign of perturbation, but he was not to be caught off guard.
Again, "The man of superior mind is placidly composed; the small-minded man is in a constant state of perturbation."
The ordinary problem of perturbation is difficult enough: Given a disturbing planet in such and such a position, to find the perturbations it produces.
The only effect of gravitational perturbation and of collisions is gradually to broaden out the whole ring, enlarging its outer and diminishing its inner diameter.
It is of the nature of a perturbation, and is therefore a periodic not a progressive or continuous change, and in a sufficiently long time it will be reversed. Still, for the last few thousand years the moon's motion has been, on the whole, accelerated (though there seems to be a very slight retarding force in action too).