.1. a, an (without)atheist, anonymous, anaerobic, apathetic, asexual, anarchy2. ab (away from) abnormal, absent, abduct, abstract, abandon, abolish3. able, ible ( capable)debatable, curable, fashionable, digestible4. acro ( height) acronym, acrobat, acrostic, acrophobia, 5. ad (toward)addition, adhesive, adhere, address, advertise6. aero (air) aeronautics, aerodynamics, aerobatics, aeromechanics, aerobic7. age, agi (to do or drive)