preposition , conjunction , & adverb
- 1during the period of time preceding (a particular event or time): [as preposition]:she had to rest before dinner the day before yesterday [as conjunction]:they lived rough for four days before they were arrested [as adverb]:his playing days had ended six years before it’s never happened to me before
A word with two main uses: subordinating conjunction. It introduces clauses of time. For example:He wanted to see her before it was too late. prepositionI hardly expected you before midnight.