Word.ws English Dictionary

longest-acting

longest-acting is the superlative form of long-acting.

Meaning of long-acting

Adjective

long-acting (comparative longer-acting, superlative longest-acting)

  1. Having a pharmaceutical effect principally in the long term.
    • I have tried all the medium and short acting non-barbiturate sedatives since the war (including thalidomide) but they don’t work and I don’t trust the newfangled long acting, “safe” analgesics.1988, E[dward] J[ames] Moran Campbell, Not Always on the Level, [London]: British Medical Journal, →ISBN, page 194
    Antonyms:
    short-acting

Questions about longest-acting

What is longest-acting the superlative form of?
Longest-acting is the superlative form of long-acting.

Words near longest-acting in the dictionary

  1. longers
  2. longes
  3. longest
  4. longest ago
  5. longest grain
  6. longest-acting
  7. longest-distance
  8. longest-felt
  9. longest-furred
  10. longest-grain
  11. longest-grained

Source and license

Adapted from Wiktionary: longest-acting (page history and authors); long-acting (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “longest-acting.” Word.ws, https://word.ws/longest-acting. Based on Wiktionary, CC BY-SA 4.0.