Gathered in one place; together. Expresses that a group of people or things is located together in one place.
example
An den Feiertagen ist endlich wieder die ganze Familie beisammen.
During the holidays, the whole family is finally together again.
Usage tips
Word structure
The word consists of 'bei' and 'sammen'. The second part is an old form related to 'sammeln' (to collect) and 'zusammen' (together). So it describes the state of being gathered in one place.
EXAMPLE
Nach langer Zeit saßen die alten Freunde wieder gemütlich beisammen.
After a long time, the old friends sat together comfortably again.
Sentence structure
As an adverb, 'beisammen' (together) usually comes at the end of a sentence or clause. It is very often combined with the verbs 'sein' (to be), 'sitzen' (to sit), or 'haben' (to have).
EXAMPLE
Es ist schön, euch alle hier beisammen zu haben.
It’s nice to have all of you here together.
Fixed expression
The expression 'nicht ganz beisammen sein' (not to be quite right in the head) is a fixed colloquial phrase. It is always used in this form to express that someone is acting crazy or unreasonable.
EXAMPLE
Er will ohne Jacke bei null Grad rausgehen? Der ist doch nicht ganz beisammen!
He wants to go outside without a jacket when it’s zero degrees? He’s clearly not right in the head!
Compare with
antonym
beisammen vs klar
clear
'klar' and 'nicht ganz beisammen' can both refer to a person's mental state. In this context, 'klar' means that someone is conscious and able to think rationally. 'Nicht ganz beisammen sein' is a colloquial expression and means that someone seems confused or is not acting rationally. So the contrast is: mentally alert and sensible with 'klar', confused or strange with 'nicht ganz beisammen'. The expression with 'beisammen' often sounds judgmental and should be used carefully.
beisammen
Nach dem Unfall war Tom nicht ganz beisammen und stellte dieselbe Frage mehrmals.
After the accident, Tom was not quite right in the head and asked the same question several times.
klar
Nach der kurzen Pause war sie wieder klar und konnte weiterarbeiten.
After the short break, she was clear-headed again and could continue working.