Elevation, or geometric height, is mainly used when referring to points on the Earth 's surface, while altitude or geopotential height is used for points above the surface, such as an aircraft in flight or a spacecraft in orbit, and depth is used for points below the surface.
disquiet - 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 Synonyms: cark, disorder, perturb, unhinge, distract, trouble
To give up (a claim or right, for example) voluntarily; relinquish. See Synonyms at relinquish. 2. To refrain from insisting on or enforcing (a rule, penalty, or requirement, for example); dispense with: The original ban on private trading had long since been waived (William L. Schurz). 3. To refrain from engaging in, sometimes temporarily; cancel or postpone: Let's waive our discussion of that problem.