The term 'spoke at length' can be described by three crossword solutions: ORATED (6 letters), RANON (5 letters), and PERORATED (9 letters). ORATED is a verb meaning to deliver a formal speech or discourse. RANON is a noun meaning a long, tedious speech. PERORATED is a verb meaning to speak or write in a pompous or grandiloquent manner. All three words describe the act of speaking at length, either formally or pompously.