20 Most Frequent Prefixes in School Texts 1

Prefixes: Meaning and Connotation Often Negative Somewhat Positive dis-, de- non- sub- pro- co-

Derivational Suffixes Derivational suffixes change the part of speech • • words ending with

hydro (water) graph (write) Forms geo (earth) Greek Combining pyro (fire) polis (city state)

Counting in Greek and Latin mono uni di bi du, duo tri tetra quadri

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20 Most Frequent Prefixes in School Texts 1. unable 2. inedible (impotent, illegal, irresponsible) review distrust enlighten (empower) nonsense inside, implant overcome misguided submarine prefix interrupt forewarn derail transfer supersonic semicircle antitrust midterm underfed Susan Ebbers 2005 Analysis: White, Sowell, and Yanagihara 1989 1

Prefixes: Meaning and Connotation Often Negative Somewhat Positive dis-, de- non- sub- pro- co- bene- in- un- mis- super- com- be- mal- anti, contra a- en-, em - ad- Susan Ebbers 2005 2

Derivational Suffixes Derivational suffixes change the part of speech • • words ending with –tion are often nouns words ending with –ive are often adjectives words ending with –ish are often adjectives words ending with –ity are often nouns What about -ment, -ous, -ness? Susan Ebbers 2005 3

hydro (water) graph (write) Forms geo (earth) Greek Combining pyro (fire) polis (city state) neuro (brain) ortho (straight) scope (see or view) photo therm (heat) crat (government) psych (mind) chron (time) phobe (fear) pseud (fake) onym (name) crypt (hidden) helio (sun) sphere (ball） the, theo （god） logy (study of X) Susan Ebbers 2005 4

Counting in Greek and Latin mono uni di bi du, duo tri tetra quadri penta hexa sept oct nove deca deci cent milli poly multi semi hemi Susan Ebbers 2005 5