Kairos is an appeal to the timeliness of the argument. Two common rhetorical devices are irony and metaphor. The use of irony in rhetoric is primarily to convey to the audience an incongruity that is often used as a tool of humor in order to deprecate or ridicule an idea or course of action.
Definition of irritant for English Language Learners. : 1  something that makes part of your body sore and painful. : 2  something that is unpleasant or annoying : something that irritates you.
irritability. 1. ability of an organism or a specific tissue to react to the environment. 2. the state of being abnormally responsive to slight stimuli, or unduly sensitive. myotatic irritability the ability of a muscle to contract in response to stretching.