From cīst(ies) (“to try”) + -ība, with with uzcīsties (“to try something, to attempt something”) from uz- + cīsties (“to try”), a less frequently used synonym (and ultimately also cognate) of censties (“to try”) (q.v.).
uzcītība f (4th declension)
- industriousness, diligence, zeal (quality of one who is industrious, hard-working, diligent)
apbrīnojama uzcītība ― admirable zeal, diligence
skolotāju istabā izlika uzvedības, kārtības un uzcītības atzīmes ― in the teacher's room (the teachers) were grading (the students) for behavior, order, and diligence