shirk

Short definition from Wiktionary

Verb

1. 1
   To avoid, especially a duty, responsibility, etc.; to stay away from.
2. 2
   To evade an obligation; to avoid the performance of duty, as by running away.
3. 3
   To procure by petty fraud and trickery; to obtain by mean solicitation.

Noun

1. 1
   One who shirks, who avoids a duty or responsibility.
2. 2
   The unforgivable sin of association (claiming something or someone can share in the oneness of God).

Proper noun

1. 1
   A surname.