Prefixes List - Spelling and Explanation

REF	PREFIX	IN	MEANING	SPELLING	EXAMPLES
WB39	aero-	adj, n	relating to the air or aircraft	aero + adj aero + n	dynamic => aerodynamic plane => aeroplane
WB38	anti-	adj, n	opposition, prevention	anti + adj anti + n	social => antisocial theft => antitheft
WB38	astro-	n	relating to the stars or outer space	astro + n	physics => astrophysics
WB40	audio-	adj, n	relating to sound or hearing	audio + adj audio + n	visual => audiovisual tape => audiotape
WB39	auto-	adj, n	self, same	auto + adj auto + n	motive => automotive changer => autochanger
WB10	be-	v	make or treat somebody/something as, about	be + rw be + rw	little => belittle speak => bespeak
WB42	bi-	adj, n	two, twice	bi + adj bi + n	lingual => bilingual cycle => bicycle
WB38	bio-	adj, n	connected with human life or living things	bio + adj bio + n	degradable => biodegradable chemistry => biochemistry
WB14	co-	adj, adv, n, v	together with	co + adj co + adv co + n co + v	educational => co-educational operatively => cooperatively star => co-star exist => coexist
WB10 WB17 WB36 WB37	de-	adj, n, v	the opposite of, removing something	de + adj de + n de + v	gradable => degradable valuation => devaluation activate => deactivate
WB42	deca-	n	ten	deca + n	litre => decalitre
WB31 WB32 WB33 WB34 WB35 WB01 WB17 WB36 WB37	dis-	adj, adv, n, v	the opposite of, not (used before words that begin with a consonant or a vowel)	dis + adj dis + adv dis + n dis + v	honest => dishonest agreeably => disagreeably advantage => disadvantage appear => disappear
WB10	en-	v	put into or onto, cause to be, cover with (used before words that begin with a consonant or a vowel (except for b, m or p)	en + rw en + rw	courage => encourage slave => enslave
WB10	em-	v	another form of the prefix en- (used before words that start with b, m or p)	em + rw = b em + rw = p	bed => embed power => empower
WB14	fore-	n, v	in advance, before	fore + n fore + v	word => foreword tell => foretell
WB39	hydro-	adj, n	relating to water, or using water	hydro + adj hydro + n	electric => hydroelectric therapy => hydrotherapy
WB31 WB32 WB33 WB34 WB35 WB01	il-	adj, adv, n	the opposite of, not (always used before words that start with l)	il + adj = l il + adv = l il + n = l	literate => illiterate legally => illegally legitimacy => illegitimacy
WB31 WB32 WB33 WB34 WB35 WB01	im-	adj, adv, n	the opposite of, not (usually before words that start with b, m or p)	im + rw = b im + rw = m im + rw = p	balance => imbalance mature => immature possible => impossible
WB31 WB32 WB33 WB34 WB35 WB01 WB02 WB36 WB37	in-	adj, adv, n	the opposite of, not (used before words that begin with a consonant or a vowel (except for i or u)	in + adj in + adv in + n	accurate => inaccurate effectively => ineffectively fallibility => infallibility
WB40	inter-	adj, n, v	between, connection	inter + adj inter + n inter + v	national => international face => interface lock => interlock
WB31 WB32 WB33 WB34 WB35 WB01	ir-	adj, adv, n	the opposite of, not (used before words that start with r)	ir + adj = r ir + adv = r ir + n = r	reparable => irreparable refutably => irrefutably rationality => irrationality
WB17	mal-	adj, n, v	bad or badly, not correct or correctly	mal + adj mal + n mal + v	odorous => malodorous nutrition => malnutrition function => malfunction
WB33 WB34 WB35 WB17 WB36 WB37	mis-	n, v	bad or wrong, badly or wrongly	mis + n mis + v	fortune => misfortune behave => misbehave
WB42	mono-	adj, n	single, one	mono + adj mono + n	syllabic => monosyllabic culture => monoculture
WB42	multi-	adj, n	more than one	multi + adj multi + n	coloured => multicoloured pack => multipack
WB38	neo-	adj, n	a new and different form of something that existed in the past	neo + adj neo + n	classical => neoclassical colonialism => neocolonialism
WB17	non-	adj, adv, n	not	non + adj non + adv non + n	stop => nonstop committally => noncommittally sense => nonsense
WB40	omni-	adj, n	everything or everywhere	omni + adj omni + n	present => omnipresent science => omniscience
WB14	out-	adj, n, v	in a manner that is greater, better, or more than something else	out + adj out + n out + v	going => outgoing patient => outpatient play => outplay
WB14	over-	adv, adj, n, v	too much or too great, so as to be better or beyond, above	over + adj over + adv over + n over + v	weight => overweight confidently => overconfidently statement => overstatement rate => overrate
WB39	photo-	adj, n, v	relating to light or photography	photo + adj photo + n photo + v	sensitive => photosensitive cell => photocell copy => photocopy
WB40	post-	adj, n	after	post + adj post + n	war => postwar graduate => postgraduate
WB40	pre-	adj, n, v	before, already	pre + adj pre + n pre + v	dominant => predominant conception => preconception occupy => preoccupy
WB39	pseudo-	adj, n	false or not real	pseudo + adj pseudo + n	democratic => pseudo-democratic science => pseudoscience
WB41	re-	n, v	again, again in a better way, back to a former state	re + n re + v	construction => reconstruction create => recreate
WB42	semi-	adj, n	half, partly but not completely	semi + adj semi + n	automatic => semi-automatic circle => semicircle
WB17 WB40	sub-	adj, n	below, less than, under, a smaller part of something	sub + adj sub + n	standard => substandard section => subsection
WB38	tele-	adj, n, v	distant, at a distance, over a distance, connected with television	tele + adj tele + n tele + v	graphic => telegraphic vision => television cast => telecast
WB40	trans-	adj, v	across, between two things	trans + adj trans + n	oceanic => transoceanic plant => transplant
WB42	tri-	adj, n	three	tri + adj tri + n	lingual => trilingual cycle => tricycle
WB31 WB32 WB33 WB34 WB35 WB01 WB02 WB36 WB37	un-	adj, adv, n, v	the opposite of, not (used before words that begin with a consonant or a vowel)	un + adj un + adv un + n un + v	able => unable consciously => unconsciously truth => untruth follow => unfollow