perturb

they were perturbed by her capricious behaviour.

Mother was much perturbed by my illness.

stellar passings can perturb the orbits of comets.

nuclear weapons could be used to perturb the orbit of an asteroid.

I am deeply perturbed by the alarming way the situation developing.

The first hyperpolarizability and molecular frontier orbit properties of barbituric acid derivatives are studied at HF/6-31G level by coupled perturbed Hartree-Fock (CPHF) method.