big fat

IPA(Pronunciation)

derogatory idiomatic not-comparable colloquial

(idiomatic, derogatory) Complete, utter, total. / (idiomatic, colloquial) Huge, colossal.

Japanese Meaning

徹底的な、全くの / 巨大な、莫大な

He told a big fat lie about why he missed the meeting.

彼は会議を欠席した理由について、まったくの嘘をついた。

Sense（1）

(idiomatic, derogatory) Complete, utter, total.

He's a big fat idiot.

Sense（2）

(idiomatic, colloquial) Huge, colossal.