Not profitable; unable to produce a financial gain or being unprofitable.
From dis- + profitable (from profit + -able). This archaic adjective follows the standard English pattern of negating adjectives with the dis- prefix.
This word is rarely used today because we prefer the simpler 'unprofitable,' but it shows how English speakers once used 'dis-' much more liberally—almost every adjective could be negated this way.
Complete word intelligence in one call. Free tier — 50 lookups/day.