Greek Prefixes

Prefix	Meaning	Examples
a,an	lacking, not, without	atypical, anonymous, anarchy, apathy
ana	up, back, again	anachronism, anagram, analogy
anti	against, opposing	antithesis, antisocial, antiseptic
arch, archi	chief, first	architect, archetype, archbishop
dia	across, apart, through, between	diagnose, dialogue, diameter
en, em	in, among, within	enliven, empathy
epi	on, outside, over, outer	epidermis, epitaph, epilogue
eu	good, well	euphony, euphemism, eulogy
hetero	other	heterogeneous, heterodox
homo	same	homogeneous, homonym, homograph
hyper	excessive, over	hyperactive, hyperbole, hypercritical
hyp, hypo	under, beneath	hypodermic, hypotenuse, hypocrite
in, il, im, ir	in(to), within, not, opposing	inspire, imprint, irradiate, infamy, inefficient, illegal
macr, macro	long, large, prominent	macrocosm, macrobiotic
meta, met	change of, over, beyond	metaphor, metabolism, metaphysics
micro	small	microfilm, microscope, microbe
neo	new, latest of a period	neon, neologism, neophyte, neocene, Neo-Hebraic
orth	straight, right	orthodonture, orthopedics, orthodox
para, par	beside, beyond, variation	paradox, paraphrase, parenthesis
pro	before, forward	program, produce, provision, progress
proto	first	proton, protozoa, prototype
syn, sym, syl, sys	together	synthesize, symphony, synchronize
tele	far, distant	telegraph, telepathy, telescope
thermo	heat	thermometer, thermonuclear
topo	place	topography
zoo	living	zoology