Proto-IE: *sēidh-
Meaning: direct; to aim
Old Indian: sā́dhati, sādhyati, sādhnoti, sadhnoti, sídhyati, pf. siṣedha, ptc. siddha- `to go straight to any goal or aim, to succeed; to bring to an end, accomplish', sādhú- `straight, right, hitting the mark', sup. sā́dhiṣṭha-; -sādh- (in comp.) `accomplishing, performing'; sidhrá-, sidhmá- `going straight to goal, successful, efficacious'
Avestan: häiδišta- `am besten zum Ziele führend, geleitend'; -had- `lenkend, leitend, zum Ziele führend', hādrōyā f. `Verlangen, Wunsch nach Erreichung des Zieles'
Armenian: aǯ `dexter, recht' [rather < NC]
Old Greek: īthǘ- `gerade, gerecht', adv. īthǘ(s) `geradeswegs', īthǖ́-s, -ǘos f. `gerade Richtung, Gang, Unternehmung', īthǘō `gerade angehen, angreifen, streben', īthǖ́nō `gerade machen, richten, lenken, führen'
Russ. meaning: прямое направление; направляться к цели
piet-prnum,piet-meaning,piet-ind,piet-avest,piet-arm,piet-greek,piet-rusmean,piet-refer,