Search wakefulness wakefulness /wāk″fulnəs/ , 1. an alert state of mind. 2. sleeplessness or insomnia. Tweet Telegram VK Random Words tors- variable interval (VI) reinforcement haptoglobin collyrium angle of incidence deep lamellar endothelial keratoplasty (DLEK) compensated gluteal gait hematogenesis transmethylation