Diligent (adjective) Showing careful and persistent effort.
Example: Her diligent studying paid off with a top score.
Mnemonic: Diligent = dedicated, steady effort applied consistently over time.
Disclose (verb) To make previously secret or private information known to others.
Example: The company was legally required to disclose the chemical ingredients used in its products.
Mnemonic: 'Dis-' is the opposite of 'close' — to disclose is the opposite of keeping something shut away.
Disperse (verb) To scatter or spread out over a wide area.
Example: Wind can disperse plant seeds far from the original parent plant.
Mnemonic: "Dis-" (apart) plus "sperse" (scatter): to disperse is to scatter apart.
Disseminate (verb) To spread information, ideas, or knowledge widely so that many people receive it.
Example: The health ministry used radio broadcasts to disseminate accurate information during the outbreak.
Mnemonic: Shares its root with 'seed' in Latin — to disseminate is to scatter seeds of information far and wide.
Distort (verb) To twist something out of its normal shape or true meaning.
Example: A single dramatic headline can distort the public's understanding of a whole scientific study.
Mnemonic: "Dis-" plus "tort" (twist, as in torture): to distort is to twist something out of shape.
Diverge (verb) To develop in a different direction, or to separate from an original path or shared point.
Example: The two researchers' theories began to diverge once new evidence came to light.
Mnemonic: 'Di-' (apart) plus 'verge,' meaning edge — two paths diverge and head off toward separate edges.
Domain (noun) A specific field of knowledge, activity, or authority.
Example: Statistics is a domain that touches nearly every other academic subject.
Mnemonic: Think of a ruler's "domain," the territory under their control, just like a field of expertise.
Dormant (adjective) Temporarily inactive but capable of becoming active again later.
Example: The volcano had been dormant for two centuries before it erupted again.
Mnemonic: "Dormant" shares a root with "dormitory," a place people sleep; dormant things are sleeping.
Drastic (adjective) Extreme and sudden, especially in a way that produces a strong effect.
Example: The company took drastic measures to cut costs after losing its biggest client.
Mnemonic: "Drastic" sounds like "dramatic": both describe big, striking changes.
Dubious (adjective) Doubtful or uncertain, often because something seems suspicious or unreliable.
Example: The salesman's dubious claim that the watch was genuine gold turned out to be false.
Mnemonic: Dubious has 'doubt' hiding in its sound — a dubious claim makes you doubt it right away.
Dwindle (verb) To become gradually smaller or weaker over a period of time.
Example: The town's population has been dwindling steadily ever since the factory shut down.
Mnemonic: Picture a candle slowly dwindling down until only a tiny stub of wax remains.
Elaborate (verb) To explain or describe something in greater detail.
Example: The professor asked the student to elaborate on her claim with specific examples.
Mnemonic: "E-" (out) plus "labor" (work): to elaborate is to work out more details.
Embark (verb) To begin a new project, journey, or activity, especially one that will take a long time.
Example: After graduation, she embarked on a career in renewable energy research.
Mnemonic: Embark once meant to step onto a ship, or bark. Today you embark on any new journey in life.
Eminent (adjective) Well-known and highly respected within a particular field.
Example: An eminent historian was invited to review the museum's new exhibit.
Mnemonic: Do not confuse with "imminent" (about to happen): eminent people stand high enough to be seen above others.
Empirical (adjective) Based on observation or experiment rather than theory.
Example: The study provided empirical evidence that the drug worked.
Mnemonic: Think 'experience' — empirical knowledge comes from experience and experiments, not just ideas.
Encompass (verb) To include a wide range of things as parts of a whole.
Example: The course encompasses everything from basic grammar to advanced academic writing skills.
Mnemonic: Picture drawing a huge circle with a compass, hidden in the word, that surrounds everything inside it.
Enhance (verb) To improve the quality, value, or attractiveness of something.
Example: Adding subtitles can enhance a viewer's understanding of a foreign-language film.
Mnemonic: En, meaning to make, plus a sound like enhanced beauty. To enhance is to make something even better than before.
Entail (verb) To involve or require something as a necessary part or consequence.
Example: Earning a medical degree entails years of demanding study and clinical training.
Mnemonic: "En-" plus "tail": picture a task dragging a long tail of requirements behind it.
Ephemeral (adjective) Lasting for a very short time.
Example: The cherry blossoms' beauty is ephemeral, fading within a week.
Mnemonic: Think of a mayfly — some species live for only a single day, the definition of ephemeral.
Equivalent (adjective) Equal in value, meaning, or importance to something else.
Example: One credit in the new system is equivalent to two credits under the old one.
Mnemonic: "Equi-" (equal) plus "valent" (value): equivalent things carry equal value.
Escalate (verb) To become or make something rapidly increase in size, intensity, or seriousness.
Example: The dispute between the two neighboring countries escalated into a full trade war.
Mnemonic: Think of an escalator that only goes up — escalate means a situation keeps rising, never settling down.
Evoke (verb) To bring a feeling, memory, or image into someone's mind.
Example: The old photographs evoked fond memories of her childhood summers by the sea.
Mnemonic: 'E-' (out) plus a root meaning to call, as in vocal — evoke calls a feeling out from deep inside you.
Exhaustive (adjective) Thorough and complete, covering every possible detail so that nothing relevant is left out.
Example: The scientists conducted an exhaustive review of every study published on the topic in the last decade.
Mnemonic: Related to 'exhaust,' meaning to use up completely — an exhaustive search checks every avenue until none remain.
Expedite (verb) To make a process happen more quickly.
Example: Submitting the form online can expedite the visa application process.
Mnemonic: "Expedite" starts like "express": both suggest speeding something up.
Extraneous (adjective) Not essential or directly related to the main subject; irrelevant.
Example: The editor cut several extraneous paragraphs that did not support the paper's main argument.
Mnemonic: "Extra-" (outside): extraneous details come from outside the real topic and do not belong.