bats

Echolocating cave dwellers

Bats is informal for crazy or eccentric: She's gone completely bats, You'd have to be bats to try that.

The expression likely comes from the phrase "bats in the belfry"—the image of bats fluttering chaotically in a church tower suggesting a disordered mind. (Lowercase bat is the flying mammal or sporting equipment.)

mammal

chiroptera

Scientific name for bats

roost · colony · pup · guano · membrane · nocturnal · insectivore · frugivore · megabat · microbat

cave

roosting

Settling to sleep aloft

cave-dwelling · limestone · grotto · stalactite · stalagmite · caver · spelunking · cenote · histoplasmosis · emergence

sport

baseball

Bat-and-ball team sport

homerun · swing · lumber · Louisville · wooden · aluminum · grip · barrel · handle · dugout

crazy

batty

Mildly eccentric or daft

  • belfryTower containing bells
  • batshitExtremely irrational or erratic
  • loonyAbsurdly irrational

mad · eccentric · erratic · unhinged · off the wall · haywire · bonkers

nocturnal

night

Dark hours daily

moonlight · crepuscular · nightfall · emergence · hunting · night sky · shadow · starlight · owl · moth

vampire

bloodsucker

Organism feeding on plasma

fangs · bite · undead · immortal · cape · transformation · folklore · legend · horror · nocturnal

halloween

spooky

Unsettlingly strange

silhouette · creepy · scary · witch · ghost · cobweb · jack-o'-lantern · trick-or-treat · October · gothic

echolocation

sonar

Underwater detection by echoes

pulses · acoustic · navigation · orientation · doppler · auditory · call · chirp · click · echo

Categories
Opposites
sanity (informal)

batssane

Mentally healthy, clearheaded

rational · sensible · lucid · sound · reasonable

biological classification (animal type)

batsbirds

Egg-laying flying vertebrates

songbirds · eagles · sparrows · robins

Phrases
Family

bat, battery, batter, batteries, batting, batted, batters, batsman, batsmen

Familiarity
Top 5,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G