Adjective

(en adjective)

Of, characterized by, or preferring privacy and isolation; secluded.

* {{quote-news

, year=2011 , date=December 19 , author=Kerry Brown , title=Kim Jong-il obituary , work=The Guardian citation , page= , passage=Kim Jong-il, who has died aged 69, was the general secretary of the Workers party of Korea, and head of the military in the Democratic People's Republic of Korea (DPRK). He was one of the most reclusive and widely condemned national leaders of the late 20th and early 21st century, leaving his country diplomatically isolated, economically broken and divided from South Korea.}}

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And if it sort not well, you may conceal her,

As best befits her wounded reputation,

In some reclusive and religious life,

Out of all eyes, tongues, minds and injuries.

Adjective

(wikipedia undefined) (-)

Lacking a definition or value.

(mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.

The result of division by zero is undefined .