heartless (adj.)
cowardly, gutless, spiritless
Luc 1392 [of a painting of Troy] the painter interlaces / Pale cowards ... / Which heartless peasants did so well resemble
Luc 471 [of Tarquin talking to Lucrece] like a trumpet doth his tongue begin / To sound a parley to his heartless foe
RJ I.i.65 [Tybalt to Benvolio] art thou drawn among these heartless hinds?