As an adjective swarthy
is tawny, dusky, dark.
As a noun swarths is
plural of swarth.
swarthy
English
Adjective
(
er)
tawny, dusky, dark
dark-skinned
* Addison
- Their swarthy hosts would darken all our plains.
(nonstandard) evil, malicious
(nonstandard) weathered, rough