前々月(ぜんぜんげつ)

A formal time expression meaning 'the month before last.' Used primarily in business, financial, and administrative writing.

Forms

前々(ぜんぜん) (two steps prior) + 月(げつ) (month). The 前々(ぜんぜん) prefix follows a productive pattern meaning 'the one before the previous one.'

Related time expressions

• 先月(せんげつ): last month
• 前々月(ぜんぜんげつ): month before last
• 前々年(ぜんぜんねん): year before last
• 前々日(ぜんぜんじつ): two days before
• 前々回(ぜんぜんかい): the time before last

Register

More formal than saying 先々月(せんせんげつ), which is sometimes used colloquially for the same meaning. In casual speech, ２か月(げつ)前(まえ) (two months ago) is more natural.