The term IN ACCOMPANIMENT can be solved by the crossword solution ALONG, which is a five-letter word. ALONG is an adverb that means in the company of someone or something else, or in addition to something else. It is often used to describe being with someone or something while doing something else. For example, one might say 'I went for a walk ALONG the beach.' In this context, ALONG means that the person was walking in the company of the beach.