The Tocharian B word oktamka
Word oktamka
o k t ɐ m k ɐ
IPA oktɐmkɐ
Meaning eighty

Comments
Douglas Q. Adams, “Etymological Dictionary of Tocharian B”, 1999, Brill

Other words that might be of interest
ṣe ‘one’, wi ‘two’, trey ‘three’, śtwer ‘four’, piś ‘five’, okt ‘eight’, okt-yaltse ‘eight thousand’, oktante ‘eighth’, piṅkte ‘fifth’, śtarte ‘fourth’, ñu ‘nine’, ñultse ‘nine thousand’, ñumka ‘ninety’, ñunte ‘ninth’, ṣukt ‘seven’, śak-ṣukt ‘seventeen’, ṣuktante ‘seventh’, ṣuktaṅka ‘seventy’, ṣkas ‘six’, śa(k)-ṣkäs ‘sixteen’, ṣkaste ‘sixth’, ṣkaska ‘sixty’, trite ‘third’, täryāka ‘thirty’, trai ‘three’