Explanation

ALLAH is Al-Haqq, The One who is the truth, the real, and the truly existing, The One whose essence is the only substance and the only reality, The One whose essence is wisdom, justice, right, rightness, The One who is just, right, proper, correct.

Al-Haqq is The One whose essence is unavoidable, The One who acts in accord with the needs of every situation, and The One through whom all righteousness, justice, and truth are revealed.

There are numerous Arabic connotations of the root word such as to be suitable to the requirements of wisdom, justice, truth or fact, to be in accord with the needs of the situation, to be true, right, correct, just, proper, to be genuine, authentic, real, sound, substantial, to be established, confirmed as fact, to be necessary, requisite, justified, to be unavoidable, inevitable, due, to be binding, obligatory, incumbent upon and to happen without doubt or uncertainty.

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Quran References

Then they His servants are returned to Allah, their true Lord. Unquestionably, His is the judgment, and He is the swiftest of accountants. (Quran 6:62)

That is because Allah is the Truth and because He gives life to the dead and because He is over all things competent (Quran 22:6)

So exalted is Allah, the Sovereign, the Truth; there is no deity except Him, Lord of the Noble Throne.  (Quran 23:116)

That Day, Allah will pay them in full their deserved recompense, and they will know that it is Allah who is the perfect in justice.  (Quran 24:25)