levallorphan

L1E1V4A1L1L1O1R1P3H4A1N1

noun

An opioid antagonist from the morphinan family.

Similar
Lorfan
Scrabble 20
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Meanings

nounlevallorphan (uncountable)
  1. uncountablemedicineAn opioid antagonist from the morphinan family.

Synonyms & antonyms

noundrug (trade name Lorfan) that is related to morphine but that counteracts the respiratory depression produced by morphine poisoning but without affecting its analgesic effects

Similar
Lorfan
Broader
drug

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

From lev- + all(yl) + -orphan (“morphinan derivate”).

Full word history & related roots →
Cite this entry
APA

levallorphan. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/levallorphan

MLA

“levallorphan.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/levallorphan. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “levallorphan,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/levallorphan.

Source: levallorphan on Wiktionary, CC BY-SA 4.0.