1) Encouraging 2) Exhortatory 3) Giving strong encouragement 4) Hortative 5) Hortatory 6) Pertaining to exhortation 7) Serving or intended to exhort Found on https://www.crosswordclues.com/clue/exhortative
Ex·hor'ta·tive adjective [ Latin exhortativus : confer French exhortatif .] Serving to exhort; exhortatory; hortative. Barrow. Found on http://www.encyclo.co.uk/webster/E/87