The term 'bear out' means to support or CONFIRM something. The crossword solutions for this term include STRENGTHEN (10 letters), CONFIRM (7 letters), DEMONSTRATE (11 letters), VALIDATE (8 letters), WITNESS (7 letters), REFLECT (7 letters), RATIFY (6 letters), JUSTIFY (7 letters), CERTIFY (7 letters), AUTHENTICATE (12 letters), WARRANT (7 letters), VERIFY (6 letters), CORROBORATE (11 letters), ATTEST (6 letters), SUBSTANTIATE (12 letters), and PROVE (5 letters). Each of these words can be used to describe the action of providing evidence or proof to support a claim.