sub-, suc-, suf-, sug-, sum-, sup-, sur-, sus-, su-

(Latin: under, below, beneath; used as a prefix as shown in various formats below)

Don't confuse the sur- in this element with the sur- in super-. Note: sub- regularly means "under", but it often changes its form as it retains or keeps its meaning:

The prefix sub- often becomes suc- before c: succumb.

The prefix sub- often becomes suf- before f: suffuse.

The prefix sub- often becomes sug- before g: suggest.

The prefix sub- often becomes sum- before m: sumptuous.

The prefix sub- often becomes sup- before p: suppression.

The prefix sub- often becomes sur- before r: surrogate.

The prefix, sub- is often simplified to su- before sp; as seen in suspect, suspend, suspicion, suspension, et al. Before c, p, and t; it is sometimes formed into sus-.

subtract, subtracts, subtracted, subtracting (verb forms)
subversion (suhb VUHR zhuhn, suhb VUHR shuhn) (s) (noun), subversions (pl)
An action of trying to destroy a government or an established belief; especially, by attacking it indirectly in written material or other verbal expressions: The authorities claimed that the riots in the city were incited by the subversions of those who were accusing the mayor of planning to raise local taxes again.
1. In a successful manner or having obtained something desired or intended:.
2. With a favorable termination of what is attempted; favorably.
1. A condition of prospering or having good fortune.
2. Resulting favorably.
succession (suhk SESH uhn) (s) (noun), successions (pl)
1. A sequence of people or things coming one after the other in time: The school children entered the school building in succession, one little group following the next one that just got off the school bus.
2. The following of one thing after another: Yesterday, the school's baseball team had five wins in succession.
3. The right to take up a position or title: In many countries there is a long history of successions to the throne to be king or queen, depending on the relationship of the members in the royal family.
4. The series of changes that create a full-fledged plant and animal community; for example, from the colonization of bare ground to the establishment of a forest: The biological succession in nature can be seen when a forest fire destroys the trees and vegetation in an area, which is then followed by new plants securing their former living conditions, followed again by more plants and animals, until life continues as it was before the fire.
5. Etymology: from Old French succession, from Latin successionem, successio, "a following after, a coming into another's place, a result"; from successus, past participle of succedere, "to come after, to go near to", from sub, "next to, after" + cedere, "to go, to move".