What does eternally mean?
Eternally is an adverb meaning in a manner that lasts forever, without end. Its most straightforward use describes things regarded as permanent or unending: lovers may promise to be eternally faithful, the religious may speak of souls existing eternally, and writers may describe truths as eternally valid. Alongside this serious, often elevated sense, English speakers frequently use the word hyperbolically to mean 'for a very long time' — complaining that a download is taking eternally or that a lecture felt eternally long. This figurative usage gives the word a playful, slightly dramatic flavor in conversation, even though its core meaning remains solemn. Derived from the adjective eternal, which traces back through Latin aeternus (from aevum, 'age' or 'lifetime'), eternally belongs to a small family including eternity and eternize. Common pairings include eternally grateful, eternally optimistic, and eternally damned. It is standard in both British and American English.
In a way that lasts or continues forever; without end.
"The covenant was said to bind the two families eternally."
Often found in religious, literary, or romantic contexts where permanence is emphasized literally.
(Hyperbolic) For a very long time.
"We waited eternally at the bus stop before one finally arrived."
Informal and figurative; conveys impatience or exaggeration rather than literal infinity.
Swap one letter and 'eternally' becomes 'externally' — which is why careful spellers never trust this adverb at first glance.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of eternally
Eternally derives from the adjective eternal, formed from Latin aeternalis, itself rooted in aeternus meaning 'everlasting', from aevum, 'age' or 'eternity'. The word entered Middle English via Old French in the medieval period, with the adverb following soon after. Cognates appear across the Romance languages, such as French éternellement and Spanish eternamente, all descending from the same Latin source.
Related word forms
How eternally is actually used
Neutral in register and appropriate in both formal and everyday contexts. In religious or literary writing it often carries a literal sense of everlasting existence, while in casual speech it is frequently hyperbolic, exaggerating mere inconvenience ('the meeting went on eternally'). The figurative use is common but can sound exaggerated in formal prose.
Easily confused with eternally
Externally means on or from the outside, while eternally means forever or endlessly — the words differ by a single letter but have entirely unrelated meanings.