What does antiar mean?
Antiar is the name of the upas tree (Antiaris toxicaria), a large tree native to the forests of Southeast Asia, particularly Java and other parts of the Malay Archipelago. The tree's milky sap contains potent cardiac poisons, and for centuries the peoples of the region refined this latex into a deadly paste used to tip arrows and blowgun darts. In Europe, the tree became the subject of lurid legend during the eighteenth and nineteenth centuries, with writers claiming it exhaled fumes so toxic that no living thing could survive nearby — an exaggeration that gave "upas" a lasting reputation as the deadliest tree on earth. Today "antiar" survives mostly in botanical and historical contexts, a reminder of how a regional poison became a byword for lethality in Western imagination.
nounThe upas tree (Antiaris toxicaria) of Southeast Asia, whose sap yields a poisonous latex historically used for arrow poison.
- The upas tree (Antiaris toxicaria), a Southeast Asian tree whose toxic sap is used as an arrow poison.
"The hunters tipped their darts with antiar before setting out into the forest."
"Botanists travelled to Java to study the antiar and extract samples of its milky sap."
"A single scratch from an antiar branch could render the latex lethal when applied to a dart."
Rarely pluralized; usually treated as an uncountable or mass reference to the tree or its poison.
"The herbarium contained pressed leaves from several antiars gathered across the archipelago."
Legend claimed the upas tree poisoned everything for miles around — in truth, its deadly sap was simply harvested to tip arrows and darts.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of antiar
The word "antiar" entered European languages through Dutch, which borrowed it from a Malay or Javanese name for the upas tree during the period of Dutch colonial involvement in Indonesia. It came into English in the eighteenth century, alongside the better-remembered term "upas," as accounts of the tree's legendary toxicity circulated among naturalists and travel writers. The name thus reflects the early modern exchange of botanical knowledge between the Malay world and Europe.
How antiar is actually used
"Antiar" is a rare, chiefly scientific or historical term; most English speakers encounter the tree under the name "upas." It appears mainly in botany, toxicology, and writing about Southeast Asian natural history.
Easily confused with antiar
"Upas" refers to the same poisonous tree but is the more widely used English name, while "antiar" is the rarer, more technical term for it.