oscitant

from WordNet (r) 3.0 (2006)

oscitant
    adj 1: showing lack of attention or boredom; "the yawning
           congregation" [syn: {drowsy}, {oscitant}, {yawning(a)}]

from 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.
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   2. Sleepy; drowsy; dull; sluggish; careless.
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            He must not be oscitant, but intent on his charge.
                                                  --Barrow.
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