sich beeilen
to hurry
To move faster or do something faster so as not to lose time; to rush.
Wir müssen uns beeilen, sonst verpassen wir den Zug.
We have to hurry, otherwise we'll miss the train.

to hurry
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to hurry
To move faster or do something faster so as not to lose time; to rush.
Wir müssen uns beeilen, sonst verpassen wir den Zug.
We have to hurry, otherwise we'll miss the train.

'Beeilen' (to hurry) is a reflexive verb and is always used with a reflexive pronoun (mich, dich, sich, uns, euch). It is a common mistake to forget this pronoun.
Du musst dich beeilen, wenn du pünktlich sein willst.
You have to hurry if you want to be on time.
The verb 'sich beeilen' (to hurry) is closely related to the noun 'die Eile' (haste) and the verb 'eilen' (to hurry). All these words express that something has to happen quickly.
In der Eile habe ich meine Schlüssel vergessen.
In the rush, I forgot my keys.
In everyday life, you very often hear the instruction to hurry. The most important forms are: 'Beeil dich!' (to one person), 'Beeilt euch!' (to a group), and 'Beeilen Sie sich!' (formal).
Beeil dich, der Bus kommt gleich!
Hurry up, the bus is coming any minute!
to accelerate
'beschleunigen' and 'sich beeilen' both have to do with becoming faster or acting faster, but they are used differently. 'beschleunigen' means that you increase the speed of something or make a process faster. It is often about vehicles, machines, procedures, or developments. 'sich beeilen' is used for people who do something more quickly so that they do not lose time. The words can be confused because both have to do with speed. Remember: you 'beschleunigt' something, but you 'beeilt' yourself.

Bitte beeil dich, sonst verpassen wir den Termin im Krankenhaus.
Please hurry, or we'll miss the appointment at the hospital.
Die neue Software beschleunigt die Arbeit im Büro deutlich.
The new software significantly speeds up work in the office.