[gid.dy] adj gid.di.er ; -est [ME gidy mad, foolish, fr. OE gydig possessed, mad; akin to OE god god] (14c) 1 a: dizzy "~ from the unaccustomed exercise" b: causing dizziness "a ~ height" c: whirling rapidly
2. a: lightheartedly silly: frivolous b: joyfully elated: euphoric -- gid.di.ly adv -- gid.di.ness n
[2]giddy vb gid.died ; gid.dy.ing vt (1602): to make giddy ~ vi: to become giddy