The term BE IMPERFECT can be broken down into three crossword solutions: TENSE (5 letters), ERR (3 letters), and TENACE (6 letters). TENSE is an adjective that describes something that is not relaxed or calm, but rather TENSE or strained. ERR is a verb meaning to make a mistake or do something wrong. TENACE is an adjective meaning persistent or determined in effort. Together, these three words describe the idea of being imperfect, as mistakes are inevitable and one must remain determined in order to overcome them.