shirk

To avoid, especially a duty, responsibility, etc.; to stay away from.

the usual makeshift by which they try to shirk difficulties

Back in school, you ever get busted for trynna walk and have some administrator tell you / "Son, you can shirk your obligations, / and try to be different from your peers, / but responsibility, your future / is gonna find you!"

To evade an obligation; to avoid the performance of duty, as by running away.

If you have a job, don't shirk from it by staying off work.

September 7, 1830, Lord Byron, letter to Mr. Murray One of the cities shirked from the league.

To procure by petty fraud and trickery; to obtain by mean solicitation.

You that never heard the call of any vocation, […] that shirk living from others, but time from yourselves.

One who shirks, who avoids a duty or responsibility.

I may add here that, coming as the soldiers did from all avocations and stations in life, these details for fatigue often brought together men few of whom had any practical knowledge of the work in hand; so that aside from the shirks, who could work but would not, there were other who would but could not, at least intelligently.

The unforgivable sin of association (claiming something or someone can share in the oneness of God).

A person can have committed shirk in their lifetime and still find forgiveness (especially by saying the Shahada and becoming a Muslim). The concept is that if one dies in this state (as a mushrik, an idolator, one who engages in and does not repent shirk), there is no forgiveness.