いわずもがな

Japanese edit

For pronunciation and definitions of いわずもがな – see the following entry.
言わずもがな
[idiom] not even saying would be preferable (because not expressing it at all would be better)
[idiom] needless to say, not to mention, obvious (because it is already known)
(This term, いわずもがな, is the hiragana spelling of the above term.)