This work provides the first linguistic description of Isaalo (Western
Sisaala [SSL]), a language spoken by less than 10,000 people in and
around Lambussie, in the Upper West Region of Ghana. It presents a
detailed phonological description and includes an orthography pro-posal
for this previously unwritten language. Included is also an over-view of
Isaalo morphology, a 1200 word lexicon and a transcribed interlinear
glossed text. This work establishes Isaalo as a distinct language within
the Sisaala language complex and disambiguates it from closely related
Sisaala languages spoken in Northern Ghana and Southwestern Burkina
Faso.