The term 'on that account' is an idiom used to refer to a situation in which something is done or said because of a previous event or statement. The crossword solutions for this term are 'thereat' (7 letters) and 'THENCE' (6 letters). 'Thereat' is an adverb meaning 'in that place' or 'at that point, ' while 'THENCE' is an adverb meaning 'from that place' or 'from that point.' Therefore, the two words together can be used to describe a situation in which something is done or said because of a previous event or statement.