He regifted the box of chocolates to his coworker because he's allergic to nuts.

regifted 是动词 regift 的过去式形式。regift 由前缀 re-（表示"再次"）和 gift（"礼物"）组成，字面意思是"再次赠送礼物"，实际指"把收到的礼物转送给别人"的行为。