Plutonium-244 has a half-life of 80 million years.
Source: tatoeba (1215162)
Half-life
/ˈhæfˌlaɪf/
Synonyms for "half-life" (8 found)
Ranked by relevance and common usage.
Closest matches (2)
Strong matches (2)
Noun(1 words)
half life
Related words (4)
Choosing the right synonym
- Closest matches in this entry: activity, decontamination, fallout, half life, radiant energy.
- Sentence evidence is available for half-life, so synonym choice can be checked against real usage rather than a flat word list.
- Ranking signals come from derived_reverse, wordnet.
Synonym selection checklist
- Match the part of speech before comparing meanings.
- Check whether the synonym changes intensity, formality, or emotional tone.
- Read the replacement inside the full sentence, not just beside "half-life".
- Prefer the clearest word over the most unusual word when writing for speed or comprehension.
When not to replace "half-life"
Keep "half-life" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
If two options seem close, choose the one that best matches the audience and purpose of the sentence.
Replacement workflow
1. Preserve meaning
Choose a synonym only if it keeps the core idea of "half-life" intact in the sentence you are editing.
2. Tune tone
Check whether the replacement sounds more formal, casual, emotional, technical, or forceful than the original word.
3. Re-read context
Read the full sentence after the swap. Keep the synonym only when the sentence becomes clearer or more precise.
Review note: Synonym lists are ranked with lexical data and reviewed for practical writing value. Use the comparison notes, sentence evidence, and source labels together; a high-ranking synonym can still be wrong when the audience, register, or grammar changes.
Final fit check
After choosing a replacement for "half-life", read the sentence once for meaning and once for rhythm. The best synonym should feel natural in the full sentence, not only accurate in a word list.
If the synonym makes the sentence slower, vaguer, or more dramatic than intended, keep "half-life" or choose a simpler alternative from the closest-match group.
Related word relations
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
More general
3 entriesTranslations
61 translations across 51 languages.
Armenian
1 entries- կիսատրոհման պարբերություն noun (time in physics)
Azerbaijani
1 entries- yarımdağılma dövrü noun (time in physics)
Belarusian
1 entries- перыяд паўраспаду noun (time in physics)
Bulgarian
1 entries- период на полуразпад noun (time in physics)
Catalan
2 entries- període de semidesintegració noun (time in physics)
- període radioactiu noun (time in physics)
Chinese Mandarin
1 entries- 半衰期 noun (time in physics)
Czech
1 entries- poločas rozpadu noun (time in physics)
Danish
1 entries- halveringstid noun (time in physics)
Dutch
2 entries- halfwaardetijd noun (time in physics)
- halveringstijd noun (time in physics)
Esperanto
1 entries- duoniĝa tempo noun (time in physics)
Estonian
1 entries- poolestusaeg noun (time in physics)
Finnish
1 entries- puoliintumisaika noun (time in physics)
French
1 entries- demi-vie noun (time in physics)
Galician
1 entries- período de semidesintegración noun (time in physics)
Georgian
2 entries- ნახევარდაშლის პერიოდი noun (time in physics)
- ნახევრად დაშლის პერიოდი noun (time in physics)
German
1 entries- Halbwertszeit noun (time in physics)
Greek
1 entries- χρόνος ημιζωής noun (time in physics)
Hindi
1 entries- अर्धायु noun (time in physics)
Hungarian
1 entries- felezési idő noun (time in physics)
Icelandic
1 entries- helmingunartími noun (time in physics)
Indonesian
1 entries- waktu paruh noun (time in physics)
Irish
1 entries- leathré noun (time in physics)
Italian
2 entries- emivita noun (time in physics)
- semivita noun (time in physics)
Japanese
1 entries- 半減期 noun (time in physics)
Kannada
1 entries- ಅರ್ಧಾಯುಷ್ಯ noun (time in physics)
Kazakh
1 entries- жартылай ыдырау мерзімі noun (time in physics)
Korean
1 entries- 반감기 noun (time in physics)
Latvian
1 entries- pussabrukšanas periods noun (time in physics)
Lithuanian
1 entries- pusėjimo trukmė noun (time in physics)
Macedonian
1 entries- период на полураспад noun (time in physics)
Malay
1 entries- separuh hayat noun (time in physics)
Malayalam
1 entries- അർദ്ധായുസ്സ് noun (time in physics)
Norwegian Bokmål
1 entries- halveringstid noun (time in physics)
Norwegian Nynorsk
1 entries- halveringstid noun (time in physics)
Persian
1 entries- نیمهعمر noun (time in physics)
Polish
2 entries- czas połowicznego rozpadu noun (time in physics)
- okres połowicznego rozpadu noun (time in physics)
Portuguese
2 entries- meia-vida noun (time in physics)
- semivida noun (time in physics)
Romanian
1 entries- perioadă de înjumătățire noun (time in physics)
Russian
1 entries- пери́од полураспа́да noun (time in physics)
Serbo-Croatian
1 entries- vreme poluraspada noun (time in physics)
Slovak
1 entries- polčas premeny noun (time in physics)
Slovene
1 entries- razpolovni čas noun (time in physics)
Spanish
3 entries- periodo de semidesintegración noun (time in physics)
- semivida noun (time in physics)
- vida media noun (time in physics)
Swedish
1 entries- halveringstid noun (time in physics)
Tagalog
1 entries- kalahatimbuhay noun (time in physics)
Tamil
1 entries- அரைவாழ்வுக் காலம் noun (time in physics)
Telugu
1 entries- అర్థ జీవితకాలం noun (time in physics)
Thai
1 entries- ครึ่งชีวิต noun (time in physics)
Ukrainian
1 entries- пері́од напівро́зпаду noun (time in physics)
Uzbek
1 entries- yarim yemirilish davri noun (time in physics)
Vietnamese
3 entries- chu kì bán rã noun (time in physics)
- chu kỳ bán rã noun (time in physics)
- chu kỳ nửa phân rã noun (time in physics)
Sample sentences
8 total sentences available.
Plutonium-239 has a half-life of 24,100 years.
Source: tatoeba (1215164)
The Half-Life logo is actually a Greek letter known as the lambda.
Source: tatoeba (8682908)
Half-Life: Alyx is widely expected to be a killer app for VR.
Source: tatoeba (8684691)
Showing 4 of 8 available sentences.
Common questions
What are the closest synonyms for "half-life"?
Closest matches include activity, decontamination, fallout, half life, radiant energy.
How should I check whether a synonym fits "half-life"?
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.