seventh

the word 'seventh' is a transparent ordinal formation built directly upon its cardinal counterpart 'seven'. the root 'seven' descends from proto-germanic sebun, which itself originates from the proto-indo-european numeral septḿ̥, a root famously stable across many languages, as seen in latin septem and greek hepta. the ordinal suffix '-th' is a native germanic derivational ending, originating from proto-germanic -dô, used specifically to denote position in a series. thus, the literal construction "seven-th" logically means "constituting the number seven in order," a meaning that has remained consistent from its old english form seofoþa to the modern term.

Structure: seven (cardinal number) + th (ordinal suffix) - seven: from old english seofon, of germanic origin; related to dutch zeven and german sieben, from an indo-european root shared by latin septem and greek hepta. functions as the cardinal number base. - th: from old english -tha, -the, of germanic origin; a suffix used to form ordinal numbers from cardinal numbers. its functional role is to convert the cardinal number into an ordinal.