Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
hortāmentum, i, n. [hortor], an incitement, encouragement (not in Cic. or Cæs.) ea cuncta Romanis hortamento erant, Sall J. 98, 7: celeritatis, Gell. 13, 24, 21: virtutis Just. 3, 5, 9.
In plur.: in conspectu parentum conjugumque ac liberorum, quae magna etiam absentibus hortamenta animi, etc., Liv. 7, 11, 6: victoriae, Tac. H. 4, 18; Lact. 5, 19, 9; 4, 1, 8.