unmentionable

Wicked is a related term of unmentionable.

As adjectives the difference between wicked and unmentionable

is that wicked is evil or mischievous by nature or wicked can be having a wick while unmentionable is not mentionable.

As an adverb wicked

is (slang|new england|british) very, extremely.

As a noun wicked

is people who are wickedoxford dictionary [http://wwwoxfordadvancedlearnersdictionarycom/dictionary/wicked_2].

As a verb wicked

is (wick).

Execrable is a related term of unmentionable.

As adjectives the difference between execrable and unmentionable

is that execrable is loathsome, detestable while unmentionable is not mentionable.