verb
to accept, to assume, to take on
B1
Annehmen: common meanings are “to accept” (an offer), “to assume” (suppose), or “to take on” (responsibility). It’s a separable, strong (irregular) verb: Präsens ich nehme an (e → i), Präteritum nahm, perfect angenommen. Uses haben as auxiliary. Reflexive sich annehmen (von) changes meaning: to take care of someone.
Examples
Ich nehme an, dass das Meeting um 10 Uhr beginnt.
I assume the meeting starts at 10 o'clock.
Sie nahm das Angebot an.
She accepted the offer.
Der Manager nahm an, dass die Lieferung pünktlich käme, obwohl das Wetter schlecht war.
The manager assumed that the delivery would arrive on time, although the weather was bad.
Details
Mnemonics
Imagine someone nodding and taking a package marked 'An'—they accept it (annehmen).
sounds like 'an-NEH-men' → 'I'll take (on) that'.
Notes
Separable verb used in many contexts. When used reflexively as 'sich annehmen (von)', it means 'to take care of' or 'to attend to' someone; meaning changes with reflexive use.