Haraam (Unlawful)
Is the exact opposite of Farz, it is established by absolute
evidence (Daleel Qatai). The perpetrator of haraam is known
as Faasiq and the one who rejects the status of haraam is a
disbeliever, for example, drinking alcohol, adultery, taking
interest and killing the innocent.
Makrooh Tahreemi (Severely Detested)
Is exact opposite of Wajib and is established by
non-absolute evidence. The one who neglects and rejects it
is termed as faasiq.
Isa'at (Detested)
Is the opposite of Sunnate Mukada and if it is continuously
practiced then it is sinful, for example making it ones
habit not to rinse the mouth during Wuzu (ablution) since it
is Sunnate Mukada to rinse the mouth.
Makrooh Tanzihi (Slightly Detested)
Is an act which if not done will earn reward, however, if it
is done then it is a punishable offence, for example
splashing water in wuzu.
Khilafe Awla (Undesirable)
Is an act which if not done is desirable and preferred but
there is no sin in doing it.
MUBAH (PERMISSIBLE)
Is an act which is neither ordered by Shariah nor
prohibited. There is no reward if done and no punishment if
not done.