Dirty or unclean in a way that could spread disease or cause health problems.
Prefix 'un-' (not) plus 'sanitary' (from Latin 'sanitas' meaning health); the concept emerged in 19th-century public health movements when people realized cleanliness prevents illness.
The cholera outbreaks of Victorian London were traced to one unsanitary water pump on Broad Street—one outbreak proved that disease wasn't caused by bad air but by contamination, and changed medicine forever.
Complete word intelligence in one call. Free tier — 50 lookups/day.