A tiresome speaker is someone who speaks in a dull and monotonous manner, often causing their audience to become bored. The term 'BORE' is used to describe such a person, as it is a four-letter word that means 'to weary by dullness, tedious repetition, or unwanted attentions'. A tiresome speaker can be found in many different settings, from classrooms to boardrooms, and can make any conversation or lecture unbearable.