Antonyms of adj heinous

1 sense of heinous

Sense 1
flagitious, heinous -- (extremely wicked, deeply criminal; "a flagitious crime"; "heinous accusations")

INDIRECT (VIA wicked) -> virtuous -- (morally excellent)

Similarity of adj heinous

1 sense of heinous

Sense 1
flagitious, heinous -- (extremely wicked, deeply criminal; "a flagitious crime"; "heinous accusations")
       => wicked (vs. virtuous) -- (morally bad in principle or practice)