[f. TITTER v.1 + -ING1.] The action of TITTER v.1; giggling.
1657. Thornley, trans. Longus Daphnis & Chloe, 129. The winking, nodding, laughing and tittering that was between them.
1759. Dilworth, Pope, 124. This story was the cause of so much tittering, wherever her ladyship went.
1833. D. MacMillan, in Hughes, Mem., iii. (1882), 50. The everlasting tittering and smirking is loathsome.