といっても過言ではない (to-ittemo-kagon-dewa-nai): It is no exaggeration to say
～といっても過言ではない (to-ittemo-kagon-dewa-nai)
Meaning
It is no exaggeration to say
Formation and usage
plain clause + といっても過言ではない
Notation: N = noun; V dictionary = dictionary-form verb; V stem = the stem before ます; plain clause = plain-form clause; negative stem = the form before ない. Follow the attachment shown above.
Explanation
Supports a strong assessment as not exaggerated; it should be grounded in context.
Examples
会議の成功は彼のおかげだといっても過言ではない。
It is no exaggeration to say that the meeting succeeded thanks to him.
試験の成功は彼のおかげだといっても過言ではない。
It is no exaggeration to say that the exam succeeded thanks to him.
研修の成功は彼のおかげだといっても過言ではない。
It is no exaggeration to say that the training session succeeded thanks to him.
発表会の成功は彼のおかげだといっても過言ではない。
It is no exaggeration to say that the presentation event succeeded thanks to him.
面接の成功は彼のおかげだといっても過言ではない。
It is no exaggeration to say that the interview succeeded thanks to him.
How related patterns differ
ことか exclaims about number or degree; ことに introduces a feeling. この上ない, 極まりない, and といったらない intensify evaluations; ったらありゃしない is strongly colloquial. たるや introduces an emphatic topic, while 過言ではない defends an assessment as no exaggeration.