unefficacious en · ADJ
Etymology
Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Germanic *un- Proto-West Germanic *un- Old English un- Middle English un- English un- English efficacious English unefficacious From un- + efficacious.
Meanings
- Not efficacious.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| more unefficacious | Degree=Cmp | lexicographic | |
| most unefficacious | Degree=Sup | lexicographic |