Reconstruction:Proto-Indo-European/tekʷ-

Reconstruction
The reconstruction of the root-final stop faces some contention with most older sources preferring the labiovelar *kʷ, while other sources question  or outright reject the labiovelar  in favor of the plain velar *k.

The evidence in favor of the labiovelar consists primarily of the 🇨🇬, which must come from an athematic stem ending in *kʷ and which may come from a univerbation of. Kloekhorst mentions, however, that this could also be a root comparable to stems such as  or.

Also, there is the proposal that 🇨🇬 came from earlier from. While Kroonen prefers the Germanic-only root, the EIEC ascribe this and other such forms as extensions of the root. If the 🇨🇬 represents a stem adjective, this could explain the appearance of this extension.

In favor of the plain velar is the 🇨🇬 from 🇨🇬, which Adams derived from or  meaning “that which flows.”

Ambiguously, the general absence of 🇨🇬 in the descendants of 🇨🇬 (🇨🇬, 🇨🇬, 🇨🇬) points to the velar being plain. Matasović, however, gives the explanation that the Brythonic was derived from the Celtic  subjunctive:  > Brythonic, and that the labiovelar does surface in the form 🇨🇬 found in Aneirin.

Root

 * 1) to run, to flow

Derived terms

 * *tékʷ-ti ~ *tkʷ-énti or *tékʷ-e-ti
 * Anatolian:
 * (< *wé-tkʷ-ti)
 * Younger ,
 * *tokʷ-éye-ti
 * Younger
 * *tékʷ-onts
 * Younger
 * Tocharian:
 * *tékʷ-o-s
 * *tekʷ-ó-s
 * (< or )
 * *tékʷ-u-s ~ *tkʷ-éw-s
 * *tkʷ-tó-s
 * Younger
 * *tokʷ-o-s
 * Younger
 * *tokʷ-éye-ti
 * Younger
 * *tékʷ-onts
 * Younger
 * Tocharian:
 * *tékʷ-o-s
 * *tekʷ-ó-s
 * (< or )
 * *tékʷ-u-s ~ *tkʷ-éw-s
 * *tkʷ-tó-s
 * Younger
 * *tokʷ-o-s
 * Younger
 * *tékʷ-onts
 * Younger
 * Tocharian:
 * *tékʷ-o-s
 * *tekʷ-ó-s
 * (< or )
 * *tékʷ-u-s ~ *tkʷ-éw-s
 * *tkʷ-tó-s
 * Younger
 * *tokʷ-o-s
 * Younger
 * *tekʷ-ó-s
 * (< or )
 * *tékʷ-u-s ~ *tkʷ-éw-s
 * *tkʷ-tó-s
 * Younger
 * *tokʷ-o-s
 * Younger
 * *tkʷ-tó-s
 * Younger
 * *tokʷ-o-s
 * Younger
 * Younger
 * *tokʷ-o-s
 * Younger
 * *tokʷ-o-s
 * Younger
 * Younger
 * Younger
 * Younger
 * Younger
 * Younger
 * Younger
 * Younger