Origin: 1400–50; late Middle English <
Latin oblīviōsus forgetful, equivalent to
oblīvī(
scī) to for-get +
-ōsus -ous Related formsob·liv·i·ous·ly, adverb
ob·liv·i·ous·ness, noun
self-ob·liv·i·ous, adjective
sem·i·ob·liv·i·ous, adjective
sem·i·ob·liv·i·ous·ly, adverb
EXPANDsem·i·ob·liv·i·ous·ness, noun
un·ob·liv·i·ous, adjective
un·ob·liv·i·ous·ly, adverb
un·ob·liv·i·ous·ness, noun
COLLAPSECan be confused: oblivious, obvious.