The term 'swear' can refer to a variety of different words and phrases, some of which are used to express strong emotions or make a PROMISE. The crossword solutions for the term 'swear' include 'CERTIFY' (7 letters), 'AFFIRM' (6 letters), 'TESTIFY' (7 letters), 'DAMN' (4 letters), 'PROMISE' (7 letters), 'BLASPHEME' (9 letters), 'OATH' (4 letters), 'CURSE' (5 letters), 'PLEDGE' (6 letters), 'DEPOSE' (6 letters), 'ATTEST' (6 letters), 'VOW' (3 letters), 'AVER' (4 letters), 'AVOW' (4 letters), 'CUSS' (4 letters), and 'talkdirty' (9 letters). These words and phrases can be used to express strong emotions, make a PROMISE, or even to take an OATH. CERTIFY, AFFIRM, TESTIFY, and DEPOSE are all words that can be used to legally confirm something, while DAMN, CURSE, and BLASPHEME are all used to express strong emotions. PROMISE, PLEDGE, VOW, AVER, AVOW, and CUSS are all words that can be used to make a PROMISE, while talkdirty is a phrase that is often used to describe someone who speaks in a vulgar manner.