Conjugation and declension of "stümpern" in German
Conjugation of the verb stümpern, weak,
perfect with haben 
bungle, stumble, bumble
Indikativ
Präsens
Präteritum
Perfekt
Plusquamperfekt
Futur I
Futur II
Konjunktiv I
Präsens
Perfekt
Futur I
Futur II
Konjunktiv II
Präteritum
Plusquamperfekt
Futur I
Futur II
Imperativ
Infinite Verbformen
Infinitiv
| Infinitiv I Aktiv | |
| Infinitiv II Aktiv |
Partizipien
| Partizip I | |
| Partizip II |
Singular and plural for Stümper,
m, strong declension 
blunderer
Popular German Verbs
sich anerkennen
erlauben
vergrößern
rennen
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begrüßen
schwimmen
umgeben
überwachen
verschaffen
verstecken
gewährleisten
sich glauben
hassen
sich breiten
erzeugen
fällen
sich gefährden
gewöhnen
sich beantworten
erheben
pflichten
bewirken
streifen
sich warten
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wirtschaften
stunden
ersetzen
klingen
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schönen
schweigen
legen
sammeln
Conjugation of German verbs
German is spoken as a first or regularly used second language by around 130 million people in Germany, Austria, Switzerland, Luxembourg, Belgium, Liechtenstein, and South Tyrol (Italy). For a short trip to these countries, it is enough to learn a few phrases from a phrase book. But if you plan to stay for contract work or long-term education, you are to study vocabulary and grammar.
Verbs are very important in German. They change in tenses, numbers and persons, they have moods and modalities, and this is the problem of mastering the language of Goethe and Schiller. Learning German grammar requires discipline and regularity of classes, suitable formats and a positive attitude.
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German Nouns and Adjectives
German nouns are declined by cases (Nominativ, Genetiv, Dativ, Akkusativ) and numbers, which often involves changing endings. German adjectives always agree with the nouns to which they refer, they are declined in cases, genders and numbers. It can be complex for language learners to identify and memorize the type of declension: strong declension (Tisch, Wasser, Buch, Gebäude, Haus), weak (Student, Mensch, Herr, Affe, Agent), feminine (Sprache, Schwester, Arbeit, Milch, Politik) or mixed one (Glaube, Doktor, Herz).
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