The term 'Bristle At' can be summarized as feeling resentment or anger towards something. This is an emotion that is often felt when someone feels slighted or disrespected. It is a feeling of indignation and can be expressed in a variety of ways, such as through words, body language, or even physical actions. The crossword solution for this term is 'RESENT', which is a six-letter word meaning to feel or express displeasure or indignation.