Uttāseti¹

to frighten, terrify Ja.i.230, Ja.i.385; Ja.ii.117.

Caus of uttasati, ud + tras, of which taṃs is uttāseti² is a variant

Uttāseti²

to impale AN.i.48; Ja.i.230, Ja.i.326; Ja.ii.443; Ja.iii.34 Ja.iv.29
pp uttāsita (q.v.). Cp. uttāsana.

cp. Sk. uttaṃsayati in meaning to adorn with a wreath; ud + taṃs to shake, a variation of tars to shake tremble