Defective verbs in Measure II are much more regular. For practical purposes, we can say it is 100% regular. However, there are always exceptions in Arabic. This page only discusses aspects of measure II specific to defective verbs. If you are unfamiliar with the morphology of measure II verbs, you can review Measure II.
The following table shows a list of some common measure II defective verbs.
All measure II defective verbs will follow this pattern regardless of what short vowels occur in measure I.
The following chart shows full conjugations for measure II defective verbs:
There are a few things to make note of:
Perfect
Imperfect
If you are already familiar with how to form the subjunctive, then measure II defective verbs will not be a problem. The same rules apply to defective verbs as they do to sound verbs. Here are the basic rules:
The following chart shows the subjunctive conjugation for measure II defective verbs.
The Jussive for defective verbs is rather simple to form, but it does tend to confuse new students when they encounter one of these verbs because the long vowel is missing. Once you understand when a verb is conjugated in the jussive, it is easier to pick up on them.
There are two basic considerations:
It is important to know how to conjugate in the jussive because it is used with لَمْ (negating in the past) as well as the negative imperative. Read more about the Jussive.
Here are a few examples of when to use the jussive.
The following table shows the conjugations for the jussive:
If you understand how to conjugate in the Jussive, then the imperative will not be difficult for you. In fact, it will be rather simple. You can follow the same method to determine the imperative as you did for the Measure I Imperative.
The following table shows the imperatives for صَلَّى \ يُصّلَّي (to pray)
Fortunately, the verbal noun for measure II defective verbs is regular. It follows the same pattern as other Measure II Verbal Nouns - تَفْعِيلٌ
For defective verbal nouns in measure II, the defective vowel (third root letter) is converted to a ة. This holds true for all measure II verbal nouns.
The active participle is regular for all measure II verbs, including defective verbs. It still follows the pattern 
Read more about Measure II Active Participles if you are unfamiliar with this pattern.
The active participle in M2 follows the exact same rules as the defective measure I rules:
When in the indefinite, the long vowel (third root letter) is dropped and the second root letter carries kasra nunation:
For the verb غَنَّى \ يُغَنِّي the active participle is مُغَنٍّ
This is used for both nominative and genitive.
The accusative retains the long vowel and adds an alif with nunation.
For example: مُغَنِّياً
When it is definite, it retains the final vowel in the form of a ي
For the verb غَنَّى \ يُغَنِّي the active participle is المُغَنِّي
This is used whenever the noun is definite, including when it is part of an idaffa.
The following chart shows some common examples:
The passive participle for measure II defective is straightforward, but there are some special considerations. As we know, the Measure II Passive Participle follows the pattern مُفَعَّلٌ
Look at these examples.
