Proto-Indo-European Roots

Root/Stem: *stHá-
Meanings:  to stand, to become
Cognates: Greek histémi < *sistámi (I stand, put), stasis (situation), Homeric sté (I stand) 
New Greek stekomai (I stand)
Latin stare (to stand), stó (I stand) < *stajó, Oscan staít (he stands); 
Romanian a sta (to stand), Sardinian istare, Ladin ster, Italian stare, Aromanian stau, French e'te' (was), Spanish estar (to be, to stand)
Common Celtic *stájó (I stand) > 
Old Irish taim (I am), (is), Scottish Gaelic tha (is), Irish Gaelic (is, am, are), Manx Gaelic ta (is, am, are)
Common Germanic *stó- (to stand), > 
Old High German stan (to stand), Old English & Old Swedish & Gothic standan (to stand), Old English stód (I stood), Old Norse standa (to stand), Old High German stantan
German stehen (to stand), stand (I stood), Icelandic & Faroese  standa (to stand), Norwegian & Swedish sta, Danish staa, Frisian stean, Dutch & Afrikaans staan
Avestan hištaiti (he stands); 
Tadzik istodan (to stand), Persian istadan, Baluchi oshtagh, oshtagha
Sanskrit asthat (he became), tisthati (he stands)
Albanian ri stuera (to stand)
Common Anatolian *sta- (to stand); > 
Hittite išta  (to stand), Lycian stta (to put, to set), Lydian istamin (family) - cognate?
Common Baltic *stó- (to stand), > 
Lithuanian stoti (to stand, to become), stoju (I stand), stove.ti (to be standing), Latvian stat (to become), Latvian stavet (to be standing), Old Prussian postát (to stand up), Sudovian stát, stalét (to stand)
Common Slavic *stati (to stand), > 
Old Russian & Old Church Slavic & Serbo-Croatian & Slovene stati (to become, to stand), Czech stati se (to become), Slovak & Russian  stat' (to stand up, to become), Ukrainian stanu (I will become), Bulgarian stoja (I stand), Belorussian stajac (to stand), Upper Sorbian stejec', Lower Serbian stojas', Polish stac' (to stand up), Macedonian stojam (I stand)
Notes: The supporters of the laryngeal theory reconstruct the Proto-Indo-European stem as *stHa-, including the laryngeal sound inside it. Later, they say, the disappearing of the laryngeal caused the lengthening of *a in the stem, which is long practically in every branch. 
One of the basic verbs in all Indo-European languages, it produced a great number of derivatives in English: words like stay, station, establish, situation, stalemate, stele originated from this very stem.