足たりない

i-adjective

insufficient; not enough; lacking

Used when a quantity, quality, or condition falls short of what is needed or expected. Often appears with nouns marked by が or に.

See also: 足りる

• 時じ間かんが足たりないので、急いそぎましょう。

  We don't have enough time, so let's hurry.

• この説せつ明めいだけでは情じょう報ほうが足たりない。

  This explanation alone doesn't provide enough information.

i-adjective

dim-witted; slow; stupid

Colloquial and somewhat blunt; used to say someone is not very bright or lacks common sense. Often in phrases like 頭が足りない or 知恵が足りない.

• あの人ひとはちょっと頭あたまが足たりないんじゃないか。

  Isn't that person a bit dim-witted?