α. 1600s ptisicky, 1700s pthisicky, 1700s ptysicky.
β. 1800s phthisicy, 1800s– phthisicky; English regional 1900s– phthysicky.
γ. English regional 1800s– tisicky, 1800s– tisiky, 1800s– tissicky, 1800s– tizacky, 1800s– tizaky, 1800s– tiziky, 1800s– tizzacky, 1800s– tizzicky, 1800s– tizziky, 1800s– tussiky, 1900s– tizicky; Welsh English 1900s– tizziky (Pembrokeshire).