SAT ROOT FAMILY

SAT Words from the Root plic/plex: 16 Words, Meanings, and Test Examples

The Latin root plic / plex, from plicare, means "to fold," and it produces the single most useful contrast on the digital SAT: explicit against implicit. Something folded out is explicit - on the page, stated, visible. Something folded in is implicit - present but not stated. Sixteen members of the family appear in the table below, from explicit at frequency rank 76 down to explicate at 3,444, with meanings and example sentences from the BARU Vocab dataset. Tiers run from 1 (the core 1,200 words) to 3 (the top-score 800). One row does not belong to the family at all, and it is flagged further down.

Word	Part of speech	Tier	Rank	Prefix	Meaning	SAT-context example
explicit	adj.	1	76	ex- (out) - folded out	stated clearly and in precise detail, leaving no room for ambiguity or doubt	The contract included explicit instructions about deadlines, penalties, and the conditions under which it could be terminated.
application	n.	1	271	ad- (toward) - folded toward	1 the practical use or implementation of a principle, method, or skill; 2 a formal request submitted to an authority or institution for a position, admission, or consideration	Within the passage, the author treats "application" as a key concept, returning to it when the argument reaches its conclusion.
duplicate	v., n.	1	933	du- (two) - folded in two	[v.] to make an exact copy of something or repeat it precisely; [n.] the copy itself	The lab was unable to duplicate the original experiment's results.
applicable	adj.	1	963	ad- (toward)	relevant or appropriate to a particular situation; able to be applied	The safety guidelines are applicable to all staff working within the facility, regardless of their role.
replica	n.	1	969	re- (back, again) - folded again	an exact or close copy of something, especially a work of art or artifact	The replica of the Eiffel Tower at Tianducheng, China stands as a striking example of global architectural homage and cultural diffusion.
implication	n.	2	1278	in- (in) - folded in	1 a conclusion or meaning that can be drawn from something though not explicitly stated; 2 the action of implicating or being implicated in something, especially wrongdoing	Within the passage, the author treats "implication" as a key concept, returning to it when the argument reaches its conclusion.
replicate	v.	2	1284	re- (again)	to make an exact copy of something; to reproduce an experiment in order to verify results	Cultural institutions can replicate themselves in diaspora communities, preserving language and tradition across generations.
multiplicity	n.	2	1681	multi- (many) - many folds	a large number or great variety of something	The multiplicity of competing theories made it hard for researchers to agree on a single framework.
complicit	adj.	2	1978	com- (together) - folded together	involved with others in wrongdoing; sharing in the guilt or responsibility for it	By staying silent for months after learning about the misconduct, the senior managers became complicit in allowing the harassment to continue unchecked.
inexplicable	adj.	2	2043	in- (not) + ex- (out)	unable to be explained or accounted for	For reasons that seemed inexplicable to her colleagues, the lead researcher abruptly withdrew from the project.
supplication	n.	2	2287	sub- (under) - folded under, as in kneeling	a humble and earnest prayer or petition requesting something from a higher authority	The villagers offered supplications at the temple, hoping for rain to end the long drought.
implicate	v.	2	2521	in- (in)	1 to show or suggest that someone is involved in something, especially wrongdoing; 2 to have as a consequence; to entail or necessarily involve	Newly surfaced emails appeared to implicate several executives in the coverup of safety violations.
implicit	adj.	2	2690	in- (in)	1 implied or understood without being directly stated; 2 unquestioning or absolute, as in implicit trust or obedience	There was an implicit agreement among the team that no one would discuss the project with outsiders.
perplex	v.	3	3098	per- (thoroughly) - thoroughly tangled	to make someone feel completely baffled or bewildered	The contradictory results perplexed the research team, who had expected a clear and consistent pattern.
panoply	n.	3	3300	not a plicare word - see below	a complete and impressive collection, array, or display of things	The museum's panoply of ancient artifacts covered three millennia of human craftsmanship in a single grand hall.
explicate	v.	3	3444	ex- (out)	to analyze and unfold the meaning of a text or idea in careful detail	The seminar asked each student to explicate a single sonnet, tracing every image and structural choice back to the poet's larger purpose.

How these appear on the digital SAT

Reading & Writing questions constantly ask whether a claim was made or merely suggested. That is the entire explicit / implicit axis, and this family supplies the vocabulary for both ends of it. When a question stem says the author "explicitly states," you are being asked to find words on the page. When it says the passage "implies" or "suggests," you are being asked for something folded in, and the correct choice will be the one the text commits to without saying.

Implication is the noun for exactly that operation, which is why it turns up in stems more often than in passages. Students who treat it only as "consequence" get caught when a passage uses it the other way. Implicate carries the same double life: in a science passage it means to entail, and in a history or journalism passage it means to name as guilty. Same fold, two registers.

Three members are load-bearing in science writing specifically. Replicate is not a synonym for copy - in research contexts it means a second team reran the study and got the result again, which is why a failure to replicate is treated as evidence against the original finding. Duplicate is the plain copying word. Multiplicity describes variety, not mere quantity, so a passage using it is usually setting up a problem: too many competing accounts, not enough agreement.

Where the root stops helping

Two cautions. First, the fold does not tell you the tone. Complicit and complicated are both "folded together," yet one accuses a person of shared guilt and the other describes a situation. In passages about institutions, complicit almost always carries the author's judgment, and missing that turns a moral claim into a neutral description.

Second, the impostor. Panoply sits at rank 3,300 and looks like it belongs, but it comes from Greek pan- (all) plus hopla (arms, armor) - originally a full suit of armor, now a full array of anything. It has no connection to plicare. It is in the table because its shape pulls it into students' plic pile by accident, and a misfiled word costs more than a correctly filed one. On the same principle, complex and perplex do belong here, but complexion drifted far enough in meaning that the root gives you nothing useful.

A 10-minute way to use this list

Cover the meaning column and read only the example sentences. Guess each word from context, then check. That order matters: the digital SAT tests recognition inside a sentence, never recall from a blank page, so drilling recall trains the wrong muscle. Then cover the prefix column and say which way each word folds - out, in, back, together, under, in two. Words missed twice go on a short review list.

Do the explicit / implicit pair separately and out loud, because it is the one you will actually be paid for. Write two sentences about the same passage: one stating what the author says explicitly, one stating what the author leaves implicit. If you cannot write the second sentence, you have not finished reading the passage - and that is the gap most Words in Context misses come from.

The five Tier 1 entries should already feel familiar. If applicable or replica does not, finish those before touching Tier 2 or Tier 3. Explicate and supplication sit at the far end of the list and earn their place mainly as distractors you can recognize rather than words you will need to produce.