I would dismiss the proposal for a new video room because the current one is seldom used.

dismiss 是动词，意思是"拒绝考虑、驳回、不予理会"。这个词由前缀 dis-（表示"否定、相反"）和词根 miss（来自拉丁语 mittere，意为"发送"）组成，字面意思是"不发送、不通过"，引申为"拒绝接受"或"驳回"。