Gender.
[13.]
The gender of Old English nouns, unlike that of Modern English, depends partly on meaning and partly on form, or ending. Thus mūð, mouth, is masculine; tunge, tongue, feminine; ēage, eye, neuter.
No very comprehensive rules, therefore, can be given; but the gender of every noun should be learned with its meaning. Gender will be indicated in the vocabularies by the different gender forms of the definite article, sē for the masculine, sēo for the feminine, and ðæt for the neuter: sē mūð, sēo tunge, ðæt ēage = the mouth, the tongue, the eye.
All nouns ending in -dōm, -hād, -scipe, or -ere are masculine (cf. Modern English wisdom, childhood, friendship, worker). Masculine, also, are nouns ending in -a.
Those ending in -nes or -ung are feminine (cf. Modern English goodness, and gerundial forms in -ing: seeing is believing).
Thus sē wīsdōm, wisdom; sē cildhād, childhood; sē frēondscipe, friendship; sē fiscere, fisher(man); sē hunta, hunter; sēo gelīcnes, likeness; sēo leornung, learning.
Declensions.
[14.]
There are two great systems of declension in Old English, the Vowel Declension and the Consonant Declension. A noun is said to belong to the Vowel Declension when the final letter of its stem is a vowel, this vowel being then known as the stem-characteristic; but if the stem-characteristic is a consonant, the noun belongs to the Consonant Declension. There might have been, therefore, as many subdivisions of the Vowel Declension in Old English as there were vowels, and as many subdivisions of the Consonant Declension as there were consonants. All Old English nouns, however, belonging to the Vowel Declension, ended their stems originally in a, ō, i, or u. Hence there are but four subdivisions of the Vowel Declension: a-stems, ō-stems, i-stems, and u-stems.