highty-tighty, n. — Green’s Dictionary of Slang

highty-tighty n.

also heighty-toity, hity-tity

[first cited in B.E. – who spells it ‘hightetity’; although hoity-toity n.¹ is earlier, OED notes the contemporary pron. of ‘oi’ as ‘igh’, as in oil = ile, boil = bile, and thus sees it as no more than ‘a variant’]

1. a promiscuous young woman.

c.1698		B.E. Dict. Canting Crew n.p.: Hightetity, a Ramp or Rude Girl.
1785		Grose Classical Dict. of the Vulgar Tongue n.p.: Heighty toity, a hoydon, or romping girl.

2. an aloof, snobbish person.

1920

Ade Hand-made Fables 235: He carried a closely wrapped Umbrella to help convince the Hity-Titys that he was Some Cuss.

3. snobbery.

1878		‘’Arry on Pooty Women’ in Punch 21 Sept. in P. Marks (2006) 149: The tip-tops are losing their stiffness; the grand highty-tighty don’t pay.
c.1895		Constance Moxon [perf.] ‘By Their Language’ 🎵 What say? been on hi-ti-tiety / You’re a - you're a tooraliety'.