A male student who attends or attended the same school class.
example
Ich habe gestern zufällig einen alten Klassenkameraden aus der Grundschule getroffen.
Yesterday I happened to run into an old classmate from elementary school.
Usage tips
Word composition
The word is made up of 'die Klasse' (class) and 'der Kamerad' (comrade / companion). So a 'Klassenkamerad' (classmate) is literally a 'Kamerad' from your school class.
EXAMPLE
Mein bester Freund war auch mein Klassenkamerad.
My best friend was also my classmate.
Careful: N-declension
'Klassenkamerad' (classmate) is a noun of the N-declension. This means it gets the ending '-en' in all cases except the nominative singular.
EXAMPLE
Ich habe meinem alten Klassenkameraden beim Umzug geholfen.
I helped my old classmate with the move.
Use with adjectives
The word is very often used with the adjectives 'alt' (old) or 'ehemalig' (former) to talk about people you used to be in a class with.
EXAMPLE
Bei dem Treffen war auch ein ehemaliger Klassenkamerad von mir.
A former classmate of mine was also at the meeting.
Compare with
near_synonym · confusable
Klassenkamerad vs Mitschüler
classmate
'Mitschüler' and 'Klassenkamerad' both mean a boy or man who goes or went to school with someone. 'Mitschüler' can be a bit more general: he may be in the same class, but sometimes he may simply attend the same school. 'Klassenkamerad' is more specific and means someone from the same class, even if the school years are already over. Learners may confuse the words because they often fit in the same situations. If the shared class is important, 'Klassenkamerad' sounds especially appropriate. If it is generally about someone from school, 'Mitschüler' is enough.
Klassenkamerad
Mein früherer Klassenkamerad wohnt heute in einer anderen Stadt.
My former classmate now lives in another city.
Mitschüler
Ein Mitschüler hat mir nach dem Unterricht die Hausaufgaben erklärt.
A classmate explained the homework to me after class.