1. Cope, treat, control, handle, treat
2. trouble, worry, dilemma
3. Relax, unwind, rest, unlax
4. Healthy, healthful
5. Adequate, abundant, decent, sufficing
6. Daily, day-to-day, often, periodically, regularly, regular, routinely
7. belittle, criticize, slam, slander,
8. abounding, bounteous, bountiful, countless, innumerable, plentiful
9. Cramped, inflexible, solid, rigid, stiff, tense, tightened
10. Depressed, morose, pessimistic, unhappy, blue, destroyed, dispirited, down, dragged low, bad, cast-down, glum, grim, let-down, low-spirited, woebegone
11. Afraid, anxious, panicky, startled, petrified, shaken, terrified, aghast, panic-stricken, terror-stricken
12. Fatigue, weariness, debilitation, enervation, expenditure, feebleness, lassitude, prostration
Unethical, musician, antibody.
These are just prefixes and suffixes that match your descriptions.
