English
jokeproof
From joke + -proof.
Formed from joke + -proof
Proto-Indo-European *yek- ‘to speak’
Proto-Indo-European *yokos ‘word’
Proto-Italic *jokos ‘word’
Latin iocus ‘joke’
English joke
Today it means
adj Unable or unwilling to understand a joke; humorless.
Language periods are conventional ranges, not dates for this word.
Etymograph / jokeproof