Adjective: fretful fret-ful
- Nervous and unable to relax
"a constant fretful stamping of hooves";
- antsy [N. Amer, informal], fidgety, itchy, restless, keyed-up, on edge, twitchy [informal]
- Habitually complaining
"a fretful child";
- querulous, whiney [rare], whiny
See also: anxious, complaining, complaintive, nervous, queasy, tense, uneasy, unquiet