1. Stems List #1 Anti against anti-aircraft, antibody, antifreeze, antisocial, antipathy, antiwar

2. Stems List #1 Con Together Contract, convict, consensus, connect, confide, conspire, collaborate, commitment, combine

3. dis away Dismiss, disrespect, disperse, disengage, discord, discomfort, divide, difference

4. Stems List #1 extra beyond Extraterrestrial, extraordinary, extrovert, external, extraneous

5. Stems List #1 inter between Interstate, interrupt, interstellar, intervene, international, intermission, internal

6. Stems List #1 mis bad Misfortune, misbehave, mistake, miscarriage, misinterpret, mispronounce

7. Stems List #1 non not Nonstop, nonprofit, none, nonsense, nonabrasive

8. Stems List #1 post after Postgraduate, post mortem, post script, posthumous, postpone

9. Pre before Predict, prelude, preliminary, precede

10. Stems List #1 circum Around Circumnavigate, circumvent, circumstance, circumference