rested

the word "rested" is a straightforward formation from the old english noun and verb "rest," which itself traces back to proto-germanic rastō or rastijō, meaning "rest, repose." the core concept of ceasing activity for relaxation is ancient and stable across germanic languages. the addition of the "-ed" suffix, a common germanic participial ending, transforms the verb into an adjective describing the state resulting from the action. thus, the literal construction "having been rested" evolved seamlessly into the modern sense of feeling refreshed after sleep or relaxation.

Structure: rest (to repose) + ed (adjective suffix) rest (from old english ræst, rest, meaning "rest, quiet, repose"; germanic origin). ed (from old english -od, -ad, past participle suffix forming adjectives).