The Collaborative International Dictionary of English v.0.48:
Oscitant \Os"ci*tant\, a. [L. oscitans, -antis, p. pr. of oscitare: cf. F. oscitant.] 1. Yawning; gaping. [1913 Webster] 2. Sleepy; drowsy; dull; sluggish; careless. [1913 Webster] He must not be oscitant, but intent on his charge. --Barrow. [1913 Webster]WordNet (r) 3.0 (2006):
oscitant adj 1: showing lack of attention or boredom; "the yawning congregation" [syn: drowsy, oscitant, yawning(a)]