The term 'BUG NO END' can be solved by the crossword solutions RANKLE (6 letters), HASSLE (6 letters), and EATAT (5 letters). RANKLE is a verb meaning to irritate or annoy, while HASSLE is a noun referring to a situation that causes difficulty or trouble. EATAT is an acronym for 'Expeditionary Airfield Tactical Automated System', which is a computer system used by the US Air Force. All three words relate to the term 'BUG NO END' in that they all refer to something that can cause frustration or difficulty.