Rigorous (adjective) Extremely thorough, strict, and demanding in method or standards.
Example: The lab required a rigorous testing process before any new drug could move to human trials.
Mnemonic: Related to 'rigor,' as in rigor mortis — a rigorous process is so exacting and unbending it leaves no slack anywhere.
Repudiate (verb) To formally reject or refuse to accept something as true, valid, or binding.
Example: The senator quickly repudiated the rumor that he had accepted money from the company.
Mnemonic: Repudiate is built on the same Latin root as 'pudere,' to feel shame -- imagine publicly casting off a claim and refusing any shameful connection to it.
Reciprocal (adjective) Describing something given, felt, or done equally in return by both sides.
Example: The two universities signed a reciprocal agreement allowing students to study at either campus.
Mnemonic: Think of a benefit that keeps cycling back and forth between two people, like a ball passed in a recurring loop.
Redundant (adjective) More than what is needed, so that something becomes an unnecessary repetition.
Example: The editor cut the paragraph because it was redundant with a point made earlier in the essay.
Mnemonic: Comes from Latin redundare, 'to overflow' — picture a cup so full that it spills over with more than anyone actually needs.
Reluctant (adjective) Unwilling or hesitant to do something, often because of doubt or a lack of enthusiasm.
Example: Many employees were reluctant to relocate to the new branch office.
Mnemonic: Imagine someone digging in their heels and struggling against a request - reluctant people resist what is being asked of them.
Ramification (noun) A complex or far-reaching consequence that follows from an action or decision.
Example: The new tax law had ramifications for small businesses across the country.
Mnemonic: Rami- means branch in Latin, like ramify - one decision branches out into many unexpected consequences.
Rationale (noun) The set of reasons or logical basis behind a decision, belief, or course of action.
Example: The author explains her rationale for choosing a qualitative research method in the introduction.
Mnemonic: Notice ratio hiding inside it - a rationale is the reasoning that adds up behind a choice.
Renowned (adjective) Famous and widely respected for a particular skill or achievement.
Example: The university is renowned for its research in marine biology.
Mnemonic: Renowned sounds like re-known - so many people know of this person that their fame keeps being renewed.
Resolute (adjective) Firmly determined and unlikely to change course despite pressure or difficulty.
Example: Despite three rejections, she remained resolute in her plan to reapply to medical school.
Mnemonic: Think of it as 're-solved-and-set' — a resolute person has already solved the question of what to do and will not reopen the case.
Revoke (verb) To officially cancel a right, permission, agreement, or law.
Example: The restaurant's license was revoked after it repeatedly failed health inspections.
Mnemonic: The root means to call back - revoking something is like calling back an invitation you already sent out.
Rhetoric (noun) The art of using language persuasively and effectively, especially in speaking or writing.
Example: The candidate's rhetoric was stirring, but voters wanted specific policy details, not just fine phrases.
Mnemonic: Comes from the Greek rhetor, 'public speaker' — picture an ancient orator on a platform using rhetoric to sway the crowd.
Rigid (adjective) Stiff and unable to bend, or, when describing a person or system, unwilling to change or adapt.
Example: The company's rigid dress code left no room for individual style.
Mnemonic: Picture a steel rod that snaps rather than bends - that stiffness is exactly what rigid describes.
Recalcitrant (adjective) Stubbornly defiant of authority or guidance and resistant to being controlled or corrected.
Example: The recalcitrant toddler refused to put on his shoes no matter how many times his father asked.
Mnemonic: The word comes from the Latin 'calcitrare,' meaning 'to kick,' the way a mule kicks back at anyone who tries to lead it. A recalcitrant person is always kicking back against control.
Subsequent (adjective) Coming after something else in time or order.
Example: The initial trial failed, but subsequent versions of the drug proved effective.
Mnemonic: Sub- plus sequent, like sequence - it simply follows next in line after what came before.
Substantial (adjective) Large in size, value, or importance; significant enough to matter.
Example: The company reported a substantial increase in profits this quarter.
Mnemonic: Substantial holds substance inside it - something with real weight and matter behind it, not a minor detail.
Subtle (adjective) So slight or delicate that it is not easy to notice or describe.
Example: There was a subtle shift in tone once the negotiations turned to pricing.
Mnemonic: The b stays silent in the spelling, just like a subtle detail quietly hides in plain sight.
Succinct (adjective) Expressed clearly in very few words, with nothing unnecessary included.
Example: Her succinct summary covered the entire quarterly report in three sentences.
Mnemonic: Succinct comes from Latin for 'girded up,' as one might tuck up a long robe to move faster -- succinct writing is tucked in tight with no loose fabric left dragging.
Superficial (adjective) Concerned only with the surface or obvious aspects, without any real depth.
Example: The article gave only a superficial account of the causes of the recession.
Mnemonic: Super- plus facial - something that stays only on the surface, like skin on a face.
Suppress (verb) To stop something from being expressed, noticed, or allowed to grow, whether it is a feeling, action, or piece of information.
Example: The government was accused of suppressing the study's findings before the election.
Mnemonic: Sub- (under) plus press - to suppress something is to press it down and hold it under, out of sight.
Surmise (verb) To guess or conclude something based on limited or incomplete information, without solid proof.
Example: From the pattern of the ruins, archaeologists surmised that the settlement had been abandoned suddenly.
Mnemonic: Think of it as a dressed-up version of a guess - a surmise sounds official, but underneath it is still just a guess.
Sustain (verb) To keep something going over time, or to support and maintain it.
Example: The economy struggled to sustain its rapid growth rate for more than two years.
Mnemonic: Sus- plus tain, like to hold - you hold something up from underneath so it keeps going.
Synthesize (verb) To combine separate ideas, elements, or pieces of information into one unified whole.
Example: The final essay asks students to synthesize research from multiple disciplines into one coherent argument.
Mnemonic: Syn- means together, and the rest echoes thesis - to synthesize is to put several separate ideas together into one.
Skeptical (adjective) Having doubts about whether a claim is true and not easily convinced.
Example: Investors remained skeptical about the startup's ambitious growth projections.
Mnemonic: Skeptical starts like suspect - a skeptical person suspects a claim may not hold up.
Speculate (verb) To form a guess or theory about something without having complete information.
Example: Analysts speculated that the merger would be announced before the end of the year.
Mnemonic: Related to spectacles, or seeing - to speculate is to peer ahead, trying to see an answer you don't fully have.
Sporadic (adjective) Happening occasionally and at irregular intervals rather than continuously.
Example: The region experiences sporadic rainfall throughout the dry season.
Mnemonic: Picture spores scattered randomly by the wind - sporadic events pop up here and there unpredictably.