disserviceable
/dɪsˈsɜrvɪsəbəl/
adjective
- Causing harm or disadvantage; not helpful; tending to do a disservice.
- Spreading unverified rumors is disserviceable to the community.
- His constant criticism was disserviceable to the team's morale.
- The outdated policy proved disserviceable to the company's growth.
Antonyms