Dictionary
Words, grammatical forms and meanings linked to the ontology.
out to lunch en · ADJ
Pronunciation
Meanings
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(not-comparable) Away eating lunch or for a midday break; especially, away from work or a job.
She's out to lunch right now, but you may leave her a note.
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(idiomatic, informal, not-comparable) Clueless, inattentive, or careless.
Zaphod Beeblebrox, adventurer, ex-hippy, good-timer, (crook? quite possibly), manic self-publicist, terribly bad at personal relationships, often thought to be completely out to lunch.
1979, Douglas Adams, The Hitchhiker's Guide to the Galaxy:But then along came this biter / And he was so out of touch / So completely self indulgent / Just so out to lunch
2002, “Along Came a Biter”, in Temporary Forever, performed by Busdriver:After he drove with his turn signal on for five miles, I was pretty sure he was out to lunch.