Phrase guide

have bats in one's belfry

verb · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

No pronunciation record was provided for this word.

1

verb

Meaning 1

To be crazy or eccentric.

Definition source: English Wiktionary via Wiktextract

Usage: idiomatic, intransitive

Examples

  • Anyone declaring himself Emperor of San Francisco probably had bats in his belfry.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

1899, from tendency of bats to fly around erratically, with “belfry” indicating “head, mind”.

Across languages

Translations

18 source translations are retained for this English entry.

  • Catalan: tenir un perdigó a l'ala — to be crazy or eccentric
  • Danish: have rotter på loftet — to be crazy or eccentric
  • Esperanto: havi muŝon en la cerbo — to be crazy or eccentric
  • Finnish: olla sekaisin — to be crazy or eccentric
  • Finnish: olla latvasta laho — to be crazy or eccentric
  • Finnish: olla häkää yliskamarissa — to be crazy or eccentric
  • French: avoir une araignée au plafond — to be crazy or eccentric
  • German: nicht alle Tassen im Schrank haben — to be crazy or eccentric
  • Hungarian: nincs ki a négy kereke — to be crazy or eccentric
  • Italian: mancare di qualche rotella — to be crazy or eccentric
  • Italian: essere svitato — to be crazy or eccentric
  • Polish: mieć nie po kolei w głowie — to be crazy or eccentric
  • Russian: винтика в голове не хватает (vintika v golove ne xvatajet) — to be crazy or eccentric
  • Russian: кры́ша пое́хала (krýša pojéxala) — to be crazy or eccentric
  • Russian: не все дома (ne vse doma) — to be crazy or eccentric
  • Russian: сорвало ба́шню (sorvalo bášnju) — to be crazy or eccentric
  • Russian: шарики за ро́лики заехали (šariki za róliki zajexali) — to be crazy or eccentric
  • Spanish: tener pájaros en la cabeza — to be crazy or eccentric