1. Stage 21 Derivatives

2. Adiuvo - help
Aid
Aide
Adjutant

3. Annus - year Annual Biannual Biennial Semi-annual Centennial Millenium
Annuity

4. Ascendo – climb, rise
Ascend (derp)

5. Barbarus - foreigner
Barbarian
Barbaric
Barber

6. Celo - hide
Conceal
Cell
Cellar

7. Circum - around Circumference Circumnavigate Circumlocution
Circumscribe
Circumstance
Circumspect
Circa

8. Confido - trust
Confide
Confident
Confidant
Confederacy

9. Deicio – throw down
De + iacio
Dejected

10. Durus – harsh, hard
Durable
Endure
Duration
Durant

11. Efficio – carry out, accomplish
Ex + facio
Efficient
Effective

12. Extraho – drag out, pull out
Extract(ion)

13. Fons – fountain, spring
Fountain (derp)
Fount
Font (not a text one)

14. Gravis – heavy, serious Gravity Gravitas Grave (noun)
Grave (adjective)
Grave (music)
Aggravate

15. iubeo - order
Jussive

16. Morbus - illness
Morbid
Moribund

17. Oppidum
Oppidan – someone living in a town

18. Peritus - skilled
Experience
Experiment
Expert(ise)

19. Plenus - full From pleo, fill Plenty Plenary Replenish Complement
Compliment
Deplete
Supplement

20. Plus - more
Plus (derp)
Plural(ity)
Surplus

21. Pretium - price
Price
Precious – from pretiosus
Appreciate
Depreciate

22. Sapiens - wise
Homo sapiens
Sapient