Form II – can denote causation or intensity
[...] fa33al
a, yufa33il
u, taf3iil
an,
[...]
kaww
ana, yukawwin
u [...]
Form III – denotes effort or involving another person
faa3
al
(faa3il is a noun not a verb), yufaa3il
u, mufaa3ala
tan,
saab
aqa – compete with
7aar
aba – wage war with
Form IV – denotes causation
af3al
a, yuf3il
u, if3aal
an,
Form V – reflexive or resultative of Form II
tafa33al
a, yatafa33al
u, tafa33ul
an,
kassara, y
ukass
iru (Form II) – to break into many pieces; smash
takassara, yatakassaru (form V) – to be caused to break; to break
Form VI – reflexive of Form III and involving reciprocity
tafaa3al
a, yatafaa3al
u, tafaa3ul
an,
saab
aqa, yusaabiqu (Form III) – compete with (some one)
tasaab
aqa, yatasaab
aqu (Form VI) – to compete with each other
7aar
aba, yu7aaribu (Form III) – to wage war with (some one)
ta7aar
aba, yata7aar
abu (FormVI) – to wage war with each other
Form VII – passive or reflexive of Form I
infa3al
a, yanfa3il
u, inf
i3aal
an,
qaTa3a, yaqTa3u (Form I) – to cut off
inqaTa3a, yanqaTi3u (Form VII) – to be cut off
inbasaTa, yanbasiTu – to enjoy oneself
(this is more of colloquial Arabic, but inbasata means more : to extend)
Form VIII – reflexive of form I but also a wide range of other meanings
ifta3al
a, yafta3il
u, ifti3aal
an,
istalama, yastalimu – to receive
i7tarama, ya7tarimu – to respect
Form IX – denotes color and physical disability (but not just that)
if3all
a, yaf3all
u, if3aall
(i'm not sure about if3aall, where did you get it from ?! do you have examples for it ?) I suggest if3ilaal
imtadda, yamtaddu, imtidaadan - to expand
inhadda, yanhaddu, haddan or inhidadan - to collapse
iswadda, yaswaddu – to become black
i7walla, ya7wall
u – to become crossieyed.
Form X – can denote asking or doing for oneself or to considering
istaf3al
a, yastaf3
il
u, istif3aal
an,
ista3mala, yasta3m
ilu – to use
ista2zana, yasta2z
inu, -- to excuse oneself,
or to ask for permission.
Remember that these are just basic guidelines to meaning. There are, of course, many exceptions. (can't agree more)