1) Affirm 2) Assert again 3) Confirm 4) Declare anew 5) Establish anew 6) Insist anew 7) Put forward again 8) Reaffirm 9) Say again 10) Say again, forcefully 11) State again with conviction 12) State anew 13) Strengthen or make more firm 1) Justify 2) Reconfirm 
• (v. t.) To assert again or anew; to maintain after an omission to do so.
Re`as·sert' (-sẽrt') transitive verb To assert again or anew; to maintain after an omission to do so. « Let us hope . . . we may have a body of authors who will reassert our claim to respectability in literature.» Walsh.