compunction (noun)

1. After killing the innocent creature, the hunter was overcome with compunction and pleaded for forgiveness to the gods.

2. The designer felt compunction for using fur in their latest collection, as they realized the cruelty involved in obtaining it.

3. The architect showed compunction for altering the historical building by carefully preserving its original features.

4. Upon reflection, the general admitted his compunction for the destructive tactics used during the battle.