あたまでっかち
atamadekkachi

Noun
na-Adjective
no-Adjective

1. top-heavy

うちの会社 かいしゃ あたまでっかちだ。
uchino kaishawa atamadekkachida.
Our company is too top-heavy.
Noun
na-Adjective
no-Adjective

2. big-headed

Noun
na-Adjective
no-Adjective

3. overly-theoretical

かれ あたまでっかちだ。
karewa atamadekkachida.
He is an armchair theorist.