Aorist Tense: Imperative
do it!

Simple fact.
Once and for all.
Specific.
 
active  do it!  middle
    παῦσ ον   sg.  παῦσ αι     
 παύσ ατε   pl.  παύσ ασθε     
stop someone else!   stop yourself!

 

 Note about the accent  The rule says: Greek (conjugated) verbs are recessive, i.e. the accent moves as far away from the end of the verb as possible. And 1st aorist imperative -αι is short, as are -ε and -ον of course.
Therefore the plural form is always acutely stressed on the stem-vowel.
The singular aorist imperative endings being both short means that
  • If the imperative form has only 2 syllables (stem+ending) and the stem has a diphthong or a long vowel, then we have to use a circumflex to show length of sound:
    εὖξαι but δέξαι (ευ is long, ε is short)
    πεῖσον, πεῖσαι
    παῦσον, παῦσαι
    λῦσον, λῦσαι
  • but forms of 3 or more syllables allow the verb-form to be recessive and therefore will have an acute accent on the antepenult:
    κέλευσον
    κόμισον
    δίδαξον
    παρασκεύασον (prepare something, lunch e.g.)
    παρασκεύασαι (prepare yourself, get ready!)
    προσχώρησον