Here are some universal characteristics of the Germanic languages:
Grimm's Law: This sound shift affected the consonants of Proto-Germanic, leading to changes in the pronunciation of certain sounds compared to other Indo-European languages.
Strong and Weak Verbs: Germanic languages distinguish between strong and weak verbs. Strong verbs form their past tense and past participle by changing the vowel sound, while weak verbs add a dental suffix. German Language Classes in Pune
Noun Declension: Many Germanic languages have a complex system of noun declension, where nouns change form depending on their grammatical role in a sentence.
Fixed Stress Pattern: Most Germanic languages have a fixed stress pattern, typically on the first syllable of a word.
Gerundive: This is a verbal noun form that is used to express obligation or necessity.
Definite and Indefinite Articles: Most Germanic languages have definite and indefinite articles.
These are just a few of the many characteristics that unite the Germanic languages. It's important to note that while these characteristics are common, there are also significant differences between individual languages within the Germanic family.