Fifth, in J.R.R. Tolkien's words

The Quenya word for fifth is lempëa (fifth, ordinal).

The Sindarin word for fifth (adj. num. ord.) is lefnui.

Fourth, in J.R.R. Tolkien's words

The Quenya word for fourth is cantëa (fourth, ordinal).

The Sindarin word for fourth (adj. num. ord.) is canthui.

Third, in J.R.R. Tolkien's words

The Quenya words for third are neldëa (third, ordinal) and nelya (third).

The Sindarin words for third (adj. num. ord.) are nail and nelui.

Second, in J.R.R. Tolkien's words

The Quenya word for second is attëa (second, ordinal), replacing the archaic form tatya.

The Sindarin words for second are edwen (second, ordinal) and tadui (second, ordinal). The word taid means "second in command, supporting".

First, in J.R.R. Tolkien's words

The Quenya words for first are minya (first; eminent, prominent) and esta or yesta (first).

The Sindarin words for first are minui (first, proper ordinal in Sindarin), and erui (single, alone; first (incorrect use by the Gondorians)).