A quick note before you dive in: you don't need any of these to order coffee or chat with a friend — using them in casual conversation can actually sound stiff or try-hard. Where they earn their place is in writing and speech meant to be precise and efficient: academic papers, legal and business documents, journalism, formal debate. Think of this less as "fancier English" and more as a specialized toolkit — the right term, in the right context, says more in fewer words than any paraphrase could.

Ad hocliterally "for this"

Created or done for a particular purpose, without previous planning — improvised for one specific case rather than planned in advance.

Latin: "The committee was an ad hoc group formed just to handle this one crisis."
Plain English: "The committee was a temporary group formed just to handle this one crisis."
Alter egoliterally "other self"

A second identity or persona within one person, often quite different from their usual self.

Latin: "Beyoncé's alter ego, Sasha Fierce, comes out during her live performances."
Plain English: "Beyoncé's alternate stage personality, Sasha Fierce, comes out during her live performances."
Bona fideliterally "in good faith"

Genuine, real, made or done without deception.

Latin: "She's a bona fide expert in marine biology, with 20 years of published research."
Plain English: "She's a genuine expert in marine biology, with 20 years of published research."
Carpe diemliterally "seize the day"

Used to encourage someone to make the most of the present moment, rather than worrying about the future.

Latin: "She quit her stable job to travel the world — carpe diem, she said."
Plain English: "She quit her stable job to travel the world — she said you only live once, so you should enjoy life while you can."
Circa (c. / ca.)literally "around"

Used before a date or number to show it's approximate, not exact.

Latin: "The painting was created circa 1650, though the exact year is unknown."
Plain English: "The painting was created around 1650, though the exact year is unknown."
De factoliterally "from the fact"

Existing in practice, even if not officially recognized or legally established.

Latin: "English is the de facto language of international business, even though it has no official status in most countries."
Plain English: "English is the language that's actually used in practice for international business, even though it has no official status in most countries."
E.g. (Exempli gratia)literally "for the sake of example"

Used to introduce one or more examples of something just mentioned.

Latin: "Bring warm clothing, e.g., a jacket, gloves, and a scarf."
Plain English: "Bring warm clothing, for example a jacket, gloves, and a scarf."
Et cetera (etc.)literally "and the rest"

Used at the end of a list to show that more, similar items could be included.

Latin: "The store sells fruit, vegetables, dairy, et cetera."
Plain English: "The store sells fruit, vegetables, dairy, and so on."
I.e. (Id est)literally "that is"

Used to clarify or restate something just said, in other words.

Latin: "Only full-time employees, i.e., those working 35+ hours a week, are eligible."
Plain English: "Only full-time employees, meaning those working 35+ hours a week, are eligible."
Perliterally "through / by means of"

According to; in accordance with.

Latin: "Per the contract, payment is due within 30 days."
Plain English: "According to the contract, payment is due within 30 days."
Per seliterally "by itself"

Intrinsically, in itself — often used to clarify something isn't necessarily true in a broader sense.

Latin: "The idea isn't bad per se, it's just poorly timed."
Plain English: "The idea isn't bad in itself, it's just poorly timed."
Status quoliterally "the state in which"

The current or existing state of affairs, especially in a social or political context.

Latin: "The new policy threatens to upset the status quo in the industry."
Plain English: "The new policy threatens to change the way things currently are in the industry."
Vice versaliterally "the position being turned" (commonly: "the other way around")

With the items in the previous statement reversed.

Latin: "Cats often dislike dogs, and vice versa."
Plain English: "Cats often dislike dogs, and the other way around too."
Notice something? In every example above, the Latin version said exactly the same thing as the "Plain English" version — just shorter and sharper. That's the whole point of this page: these aren't fancier words for the sake of sounding smart, they're a shortcut to precision.
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