nobody home

Lights off, absent

Nobody home describes mental absence or vacancy.

Someone with nobody home isn't paying attention, lacks intelligence, or seems mentally checked out: I waved at him but there was nobody home—just staring into space.

The phrase evokes knocking on a door to find the house empty.

Also appears as the lights are on but nobody's home, suggesting the appearance of awareness without actual presence.

Related

blank stare · empty · daydreaming · unoccupied · hollow · oblivious · away with the fairies · scatterbrained · checked out · spaced-out · missing in action · head in the clouds · forsaken · desolate · disengaged · lost in thought · void · gone fishing

Opposites
occupancy/presence

nobody homeoccupied

Currently in use

at home · full house · inhabited · home · tenanted

mental alertness

nobody homesharp as a tack

Extremely intelligent and alert

all there · alert · bright · sharp · quick-witted

social availability

nobody homeopen house

Unrestricted visiting period

come on in · available · entertaining

Family

nobody, home, body, bodies, bodied, bodily, embody, embodied, embodiment

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G