

For Welsh, normally the modern form is given, but occasionally the form from Old Welsh is supplied when it is known and displays important features lost in the modern form. For the Celtic languages, both Old Irish and Welsh cognates are given when possible.For Tocharian, both the Tocharian A and Tocharian B cognates are given whenever possible.Luvian, Lycian) may occasionally be given in place of or in addition to Hittite. Similarly, a cognate from another Anatolian language (e.g. In place of Latin, an Oscan or Umbrian cognate is occasionally given when no corresponding Latin cognate exists.For Hittite, either the third-person singular present indicative or the stem is given.Where useful Sanskrit root forms are provided using the symbol √.

For Sanskrit, Avestan, Old Persian, Parthian, the third-person singular present indicative is given.For Greek, Old Irish, Armenian and Albanian (modern), only the first-person singular present indicative is given.For Latin, the Baltic languages, and the Slavic languages, the first-person singular present indicative is given, with the infinitive supplied in parentheses.For the Germanic languages and for Welsh, the infinitive is given.The exact form given depends on the specific language: Verbs are given in their "dictionary form".(For some languages, especially Sanskrit, the basic stem is given in place of the nominative.) Nouns are given in their nominative case, with the genitive case supplied in parentheses when its stem differs from that of the nominative.In addition, modern English forms are given for comparison purposes. Cognates are in general given in the oldest well-documented language of each family, although forms in modern languages are given for families in which the older stages of the languages are poorly documented or do not differ significantly from the modern languages.
