Tittup \Tit"tup\, v. i. [imp. & p. p. Tittupedor Tittupped; p. pr. & vb. n. Tittuping or Tittupping.] [Written also titup.] [Cf. Teeter.] To behave or move in a lively or restless manner, as an impatient horse; to caper; to prance; to frisk. --Kipling.
Source: Webster's Revised Unabridged Dictionary (1913)
Tittup \Tit"tup\, n. The act of tittuping; lively, gay, or restless behavior or gait; a prance or caper. [Written also titup.]