Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

āthlētĭcē, adv., v. athleticus fin.

āthlētĭcus, a, um, adj., = ἀθλητικός, of or pertaining to the athlete, athletic (not in Cic.): victus, Cels. 4, 6 fin.: ars, Gell. 15, 16, 2; also without ars: āthlētĭca, ae, f., the athletic art, athletics, Plin. 7, 56, 57, § 205.
Adv.: āthlētĭcē, athletically, only in Plaut.: Pancratice atque athletice (valuit), Plaut. Bacch. 2, 3, 14: Valet pugilice atque athletice, id. Ep. 1, 1, 18.