Meaning

adjective not divisible by two

adjective not easily explained

adjective an indefinite quantity more than that specified

originFrom Middle English odde, od (“odd (not even); leftover after division into pairs”), from Old Norse oddi (“odd, third or additional number; triangle”), from oddr (“point of a weapon”), from Proto-Germanic *uzdaz (“point”), from Proto-Indo-European *wes- (“to stick, prick, pierce, sting”) + *dʰeh₁- (“to set, place”). Cognate to Icelandic oddi (“triangle, point of land, odd number”), Swedish udda…

Etymology from Wiktionary, CC BY-SA 3.0