Prefixes and Suffixes Prefixes: pre before; ahead of time dis not; opposite of mis not; opposite of; wrongly non not inter between; among extra outside; beyond post after super above; over; beyond sub under; beneath; below re back; again Suffixes: less without able, ible able to; having the ability to ly in a certain condition, manner, or way or, ar, er one who does something ness state, quality, or condition of ment state, quality, or condition of ship state, quality, or condition of tion state, quality, or condition of en pertaining to; cause to be