Common Prefixes

A-, an-

Without

Ab-

Away, from

Ad-

Toward

Ambi-

Both

Ante-

Before

Anti-

Against

Auto-

Self

Bi-

Two, twice, double

Brady-

Slow

Circum-

Around

Contra-

Against

De-

Down

Dys-

Painful, abnormal, difficult, bad

Endo-

Within, inside

Epi-

Above, on

Eu-

Normal, good

Ex-, extra-, exo-

Outside of

Hemi-

Half

Hyper-

Above, excessive, increased

Hypo-

Below, decreased, insufficient

Infra-

Beneath

Inter-

Between, among

Intra-

Within, during

Levo-

To the left

Macro-

Large

Mal-

Bad

Mega-

Exceptionally large

Meso-

Middle

Meta-

Over, beyond

Micro-

Small

Mono-

One

Multi-

Many

Neo-

New

Nulli-

None

Peri-

Around

Poly-

Many

Post-

After, behind

Pre-, pro-

Before, in front of

Presby-

Older age

Primi-

First

Pseudo-

False

Quadri-

Four

Retro-

Behind, in back of

Sten-

Narrowed

Sub-

Under

Super-, supra-

Above, excess

Sym-, syn-

Together, with

Tachy-

Fast

Trans-

Across

Tri-

Three

Ultra-

Beyond, excess

Uni-

One