What is the meaning of -the?

slender form of -tha: alternative form of -ta

slender form of -tha: alternative form of -ta

slender form of -tha: alternative form of -ta

Forms abstract nouns denoting a state or attribute, usually from adjectives but occasionally from verbs; -th, -ness

Forms ordinal numerals, except for first, seconde, thridde; -th.

Source: wiktionary.org