Form 10 in Arabic
This form is easy to recognise because ist- (اِسْتَ) is prefixed, and the first and second root consonants are not separated by a vowel. The pattern for this form is اِسْتَفْعَلَ – يَسْتَفْعِلُ.
Similar to the previous forms, a hamza with kasra is added to the past tense to make it pronounceable, and it is dropped in the present tense.
The meaning of this form can be requestative (to ask for an action) or estimative (to consider or regard something as such), and it can also function as the reflexive of Form 4.
Here is a comparison between Form 4 and Form 10 to better understand the differences:
Now let’s take a look at some verbs in Form 10:
The pattern for the verbal noun is: اِسْتِفْعَال
The active participle pattern is: مُسْتَفْعِل
The passive participle pattern is: مُسْتَفْعَل
As you can see, only a minor change differentiates the active and passive participles.
Here are some examples:
