affirmation, recognition, reaffirmation, apology, rebuke, acceptance, disavowal, explanation, reminder, denunciation, indication, mea culpa, reflection, denouncement, endorsement, acknowledgement, repudiation, acquiescence, attaboy, admonishment, reiteration, realization, announcement, commendation, avowal, validation, confirmation, testament, intimation, implication, appreciation, assertion, approbation, reassertion, understanding, hint, mention, reproach, recompense, encouragement, allusion, salutation, manifestation, response, contrition, invitation, embracement, refutation, nod, condemnation, encomium, atonement, assent, exemplification, underlining, reassurance, pronouncement, apologia, exculpation, proof, congratulation, clarification, gratuitousness, gesture, elaboration, begrudging, revelation, abasement, imprimatur, honor, elision, vindication, laudation, nascence, accomplishment, bestowal, omission, assurances, declaration, affront, absolution, kudos, denial, distinction, chastisement, apologizer, expiation, blessing, achievement, denigration, genuflection, rejection, admission, standoffishness, acknow, plaudit, rebuff, regard, overture, inkling, tacit, renunciation, acknowledgments, acknowledgements, confession, disclaimer, permission, notice, amends, cognizance, reparation, consent, notification, disclosure, request, handwritten, illegible, legible, comment, typewritten, underlined, appended, contents, fragmentary, personalised, personalized, scrawled, typed, assignment, bracketed, decoded, detail, diary

admission, aloha, apology, ciao, commiseration, condolence, congratulation, declination, farewell, felicitation, greeting, handclasp, handshake, handshaking, receipt, refusal, regrets, salutation, shake, thanking, thanks, word of farewell

admission, aloha, ciao, farewell, greeting, mea culpa, receipt, rendering, salutation, stilted, thanks, word of farewell

acceptance, content, message, subject matter, substance

acknowledgement, recognition