Proto-Indo-European Roots
| Root/Stem: | *sekw- |
| Meaning: | to follow |
| Cognates: | |
| Hellenic | Greek hepomai 'I follow' |
| Italic | Latin sequor 'I follow', secundus 'second, the following' |
| Celtic | Common Celtic *sekw- 'to follow' > Old Irish sechur 'I follow', Middle Irish sechim, Welsh & Breton hep 'without' |
| Indic | Sanskrit sacate, sacati 'he follows' |
| Iranian | Avestan hac'aiti 'he follows' |
| Baltic | Lithuanian sekti 'to follow', seka 'he follows', Latvian sekt 'to follow' |
| Notes: | This root is one of the best to demonstrate the Indo-European labiovelar *kw sound and its reflections in separate dialects. The meaning remained also quite clear and never changed. |