, ab, abs_--signify from or away; as, _a-vert_, to turn from;
_ab-ject_, to throw away; _abs-tract_, to draw away.

_Ad_--to or at; as, _ad-here_, to stick to; _ad-mire_, to wonder at.

_Ante_--means before; as, _ante-cedent_, going before.

_Circum_--signifies round, about; as, _circum-navigate_, to sail round.

_Con, com, co, col_--together; as, _con-join_, to join together;
_com-press_, to press together; _co-operate_, to work together;
_col-lapse_, to fall together.

_Contra_--against; as, _contra-dict_, to speak against.

_De_--from, down; as, _de-duct_, to take from; _de-scend_, to go down.

_Di, dis_--asunder, away; as, _di-lacerate_, to tear asunder;
_dis-miss_, to send away.

_E, ef, ex_--out; as, _e-ject_, to throw out; _ef-flux_, to flow out;
_ex-clude_, to shut out.

_Extra_--beyond; as, _extra-ordinary_, beyond what is ordinary.

_In, im, il, ir_--(_in_, Gothic, _inna_, a cave or cell;) as, _in-fuse_,
to pour in. These prefixes, when incorporated with adjectives or nouns,
commonly reverse their meaning; as, _in-sufficient, im-polite,
il-legitimate, ir-reverence, ir-resolute_.

_Inter_--between; as, _inter-pose_, to put between.

_Intro_--within, into; _intro-vert_, to turn within; _intro-duce_, to
lead into.

_Ob, op_--denote opposition; as, _ob-ject_, to bring against; _op-pugn_,
to oppose.

_Per_--through, by; as, _per-ambulate_, to walk through; _per-haps_, by
haps.

_Post_--after; as, _post-script_, written after; _post-fix_, placed
after.

_Prae, pre_--before; as, _pre-fix_, to fix before.

_Pro_--for, forth, forward; as, _pro-noun_, for a noun; _pro-tend_, to
stretch forth; _pro-ject_, to shoot forward.

_Praeter_--past, beyond; as, _preter-perfect_, pastperfect;
_preter-natural_, beyond the course of nature.

_Re_--again or back; as, _re-peruse_, to peruse again; _re-trade_, to
trade back.

_Retro--_backwards; as, _retro-spective_, looking backwards.

_Se_--aside, apart; as, _se-duce_, to draw aside.

_Sub_--under; as, _sub-scribe_, to write under, or _sub-sign_.

_Subter_--under; as, _subter-fluous_, flowing under.

_Super_--above or over; as, _super-scribe_, to write above;
_super-vise_, to overlook.

_Trans_--over, beyond, from one place to another; as, _trans-port_, to
carry over; _trans-gress_, to pass beyond.

II. GREEK PREFIXES.

_A_--signifies privation; as, _anonymous_, without name.

_Amphi_--both or two; as, _amphi-bious_, partaking of both or two
natur