| Main Entry: | deleterious |
| Part of Speech: | adjective |
| Definition: | harmful, damaging |
Synonyms: |
bad, destroying, destructive, detrimental, hurtful, injurious, mischievous, nocent, nocuous, pernicious, prejudicial, prejudicious, ruining, ruinous |
Antonyms: |
aiding, assisting, helpful |