Definition from Wiktionary, the free dictionary
See also droch-
Old Irish 
Etymology 1 
Etymology 2 
- (wheel): roth
Scottish Gaelic 
droch (comparative miosa)
Usage notes 
- Unlike the majority of Scottish Gaelic adjectives, droch precedes the noun and lenites it.
- Cannot be used on its own (without a noun).
- Often prefixed to words to indicate a malignant subject, similarly to English ill-, as seen in Derived terms below.