low-hearted

adjective3

1. •
   Depressed, despondent, or dispirited

   • Weary, slack-jointed, low-hearted as they were, the deadly Coast-fever fell upon them, and they shivered, and burned,and groaned,and raved, and leaped into holes, or rolled into campfires. — 1886
2. •
   Morally reprehensible, cowardly, or untrustworthy.

   • I would not find myself at thirty brigaded with a set of low-hearted priests and seminarists, who have no other weapons than treachery, nor any strategy but lies. — 1865
3. •
   (no longer used) Modest and unassuming.

   • His poor countrymen, seeing his boldness, began to fetch deep sighs and groan like so many chained lions, speaking so loud that the khan as well as the four low-hearted chiefs, could hear them. — 1792