词根词缀：ag-, agen-, act-, agi-, agit-

【来源及含义】Latin: to set in motion, to hurry, to shake; to drive; to do, to act; to lead, to conduct, to guide

【同源单词】Ab actu ad posse valet illatio, Ab agendo, act, acta, Acta est fabula, acta sanctorum

词根词缀：com-, co-, cog-, col-, con-, cor-

【来源及含义】Latin: together, together with, with

【相关描述】The prefix com- is assimilated to co- before h, w, and all vowels:

The prefix com- becomes, cog- before g: cognition, [co + gnoscere, "to know"], et al.

The prefix com- becomes, col- before l: colloquial, et al.

The prefix com- becomes, con- before c, d, g, j, n, q, s, t, v: covivant, et al.

The prefix com- becomes, cor- before r: corrigible, et al.

【相关词根词缀】 Related "together" units: greg-; inter-; struct-.

【同源单词】abscond, abscondee, anticorrosive, bioconcentration, coadjutant, coadjuting

词根词缀：-ible

【来源及含义】Latin: a suffix; can be done, worthy of being, able to be, tending to, capacity for

【同源单词】audible, biocompatible, cognoscible, compatible, condensable, contemptible

词根词缀：regi-, reg-, rec-, rex-

【来源及含义】Latin: to direct, to rule, to lead straight, to keep straight; to guide, to govern

【相关描述】Although it does not appear to be correct, all of the words in this unit etymologically come from this family group. Some words; such as, surge and its related formats, may be presented as separate units; however, they originally evolved from this family unit.

【相关词根词缀】Cross references of word families related directly, or indirectly, to: "master, lead, leading, ruler, ruling, govern": -agogic; agon-; arch-; -crat; dom-; gov-; magist-; poten-; tyran-.

【同源单词】address, address, addressee, addresser, addressograph, adroit