fjórði

fjórði is the Icelandic word for "fourth". It is the ordinal number that follows third and precedes fifth. In Icelandic grammar, fjórði is inflected to agree in gender, number, and case with the noun it modifies. For example, the masculine form is fjórði, the feminine is fjórða, and the neuter is fjórða. The plural forms are fjórðu for all genders. It is commonly used in contexts such as dates (e.g., fjórði apríl for April 4th), rankings, and sequences. The word originates from Proto-Germanic *fjerþu*, which also gave rise to similar words in other Germanic languages.