lethal

UK: ˈliːθəl | US: ˈliːθəl

Definition

  1. adj. capable of causing death; deadly or fatal

  2. adj. extremely harmful or destructive

Structure
leth <death>al <adjective suffix>
Etymology

lethal = leth<death> + al<adjective suffix>

  • leth<death>: From Latin letum (death), later influenced by Greek lēthē (forgetfulness, oblivion, as in the mythological River Lethe). The connection to death arises from the concept of oblivion as a form of "eternal sleep."
  • al<adjective suffix>: A common suffix derived from Latin -alis, used to form adjectives meaning "pertaining to."

Etymology Origin:
The word lethal traces back to Latin letalis (deadly), from letum (death). Its spelling was later altered under the influence of Greek lēthē, blending the ideas of death and oblivion. The modern sense retains the core meaning of "causing death," with the suffix -al solidifying its role as an adjective.

Examples

  1. The snake's venom is highly lethal to small animals.

  2. The chemical spill had lethal consequences for marine life.

  3. The doctor warned that the dosage could be lethal if exceeded.

  4. The assassin used a lethal dose of poison.

  5. The pandemic proved lethal for vulnerable populations.