• عَاكِف
• مَعْكُوف
• يَعْكُفُونَ

Appears 9 times in the Quran.

1. 2:125 وَإِذْ جَعَلْنَا ٱلْبَيْتَ مَثَابَةً لِّلنَّاسِ وَأَمْنًا وَٱتَّخِذُوا۟ مِن مَّقَامِ إِبْرَٰهِۦمَ مُصَلًّى وَعَهِدْنَآ إِلَىٰٓ إِبْرَٰهِۦمَ وَإِسْمَٰعِيلَ أَن طَهِّرَا بَيْتِىَ لِلطَّآئِفِينَ وَٱلْعَٰكِفِينَ وَٱلرُّكَّعِ ٱلسُّجُودِ

   And when We made the House a pilgrimage for men and a (place of) security, and: Appoint for yourselves a place of prayer on the standing-place of Ibrahim. And We enjoined Ibrahim and Ismail saying: Purify My House for those who visit (it) and those who abide (in it) for devotion and those who bow down (and) those who prostrate themselves.
   

2. 2:187 أُحِلَّ لَكُمْ لَيْلَةَ ٱلصِّيَامِ ٱلرَّفَثُ إِلَىٰ نِسَآئِكُمْ هُنَّ لِبَاسٌ لَّكُمْ وَأَنتُمْ لِبَاسٌ لَّهُنَّ عَلِمَ ٱللَّهُ أَنَّكُمْ كُنتُمْ تَخْتَانُونَ أَنفُسَكُمْ فَتَابَ عَلَيْكُمْ وَعَفَا عَنكُمْ فَٱلْـَٰٔنَ بَٰشِرُوهُنَّ وَٱبْتَغُوا۟ مَا كَتَبَ ٱللَّهُ لَكُمْ وَكُلُوا۟ وَٱشْرَبُوا۟ حَتَّىٰ يَتَبَيَّنَ لَكُمُ ٱلْخَيْطُ ٱلْأَبْيَضُ مِنَ ٱلْخَيْطِ ٱلْأَسْوَدِ مِنَ ٱلْفَجْرِ ثُمَّ أَتِمُّوا۟ ٱلصِّيَامَ إِلَى ٱلَّيْلِ وَلَا تُبَٰشِرُوهُنَّ وَأَنتُمْ عَٰكِفُونَ فِى ٱلْمَسَٰجِدِ تِلْكَ حُدُودُ ٱللَّهِ فَلَا تَقْرَبُوهَا كَذَٰلِكَ يُبَيِّنُ ٱللَّهُ ءَايَٰتِهِۦ لِلنَّاسِ لَعَلَّهُمْ يَتَّقُونَ

   It is made lawful to you to go into your wives on the night of the fast; they are an apparel for you and you are an apparel for them; Allah knew that you acted unfaithfully to yourselves, so He has turned to you (mercifully) and removed from you (this burden); so now be in contact with them and seek what Allah has ordained for you, and eat and drink until the whiteness of the day becomes distinct from the blackness of the night at dawn, then complete the fast till night, and have not contact with them while you keep to the mosques; these are the limits of Allah, so do not go near them. Thus does Allah make clear His communications for men that they may guard (against evil).
   

3. 7:138 وَجَٰوَزْنَا بِبَنِىٓ إِسْرَٰٓءِيلَ ٱلْبَحْرَ فَأَتَوْا۟ عَلَىٰ قَوْمٍ يَعْكُفُونَ عَلَىٰٓ أَصْنَامٍ لَّهُمْ قَالُوا۟ يَٰمُوسَى ٱجْعَل لَّنَآ إِلَٰهًا كَمَا لَهُمْ ءَالِهَةٌ قَالَ إِنَّكُمْ قَوْمٌ تَجْهَلُونَ

   And We made the children of Israel to pass the sea; then they came upon a people who kept to the worship of their idols They said: O Musa! make for us a god as they have (their) gods He said: Surely you are a people acting ignorantly:
   

4. 20:91 قَالُوا۟ لَن نَّبْرَحَ عَلَيْهِ عَٰكِفِينَ حَتَّىٰ يَرْجِعَ إِلَيْنَا مُوسَىٰ

   They said: We will by no means cease to keep to its worship until Musa returns to us.
   

5. 20:97 قَالَ فَٱذْهَبْ فَإِنَّ لَكَ فِى ٱلْحَيَوٰةِ أَن تَقُولَ لَا مِسَاسَ وَإِنَّ لَكَ مَوْعِدًا لَّن تُخْلَفَهُۥ وَٱنظُرْ إِلَىٰٓ إِلَٰهِكَ ٱلَّذِى ظَلْتَ عَلَيْهِ عَاكِفًا لَّنُحَرِّقَنَّهُۥ ثُمَّ لَنَنسِفَنَّهُۥ فِى ٱلْيَمِّ نَسْفًا

   He said: Begone then, surely for you it will be in this life to say, Touch (me) not; and surely there is a threat for you, which shall not be made to fail to you, and look at your god to whose worship you kept (so long); we will certainly burn it, then we will certainly scatter it a (wide) scattering in the sea.
   

6. 21:52 إِذْ قَالَ لِأَبِيهِ وَقَوْمِهِۦ مَا هَٰذِهِ ٱلتَّمَاثِيلُ ٱلَّتِىٓ أَنتُمْ لَهَا عَٰكِفُونَ

   When he said to his father and his people: What are these images to whose worship you cleave?
   

7. 22:25 إِنَّ ٱلَّذِينَ كَفَرُوا۟ وَيَصُدُّونَ عَن سَبِيلِ ٱللَّهِ وَٱلْمَسْجِدِ ٱلْحَرَامِ ٱلَّذِى جَعَلْنَٰهُ لِلنَّاسِ سَوَآءً ٱلْعَٰكِفُ فِيهِ وَٱلْبَادِ وَمَن يُرِدْ فِيهِ بِإِلْحَادٍۭ بِظُلْمٍ نُّذِقْهُ مِنْ عَذَابٍ أَلِيمٍ

   Surely (as for) those who disbelieve, and hinder (men) from Allah's way and from the Sacred Mosque which We have made equally for all men, (for) the dweller therein and (for) the visitor, and whoever shall incline therein to wrong unjustly, We will make him taste of a painful chastisement.
   

8. 26:71 قَالُوا۟ نَعْبُدُ أَصْنَامًا فَنَظَلُّ لَهَا عَٰكِفِينَ

   They said: We worship idols, so we shall be their votaries.
   

9. 48:25 هُمُ ٱلَّذِينَ كَفَرُوا۟ وَصَدُّوكُمْ عَنِ ٱلْمَسْجِدِ ٱلْحَرَامِ وَٱلْهَدْىَ مَعْكُوفًا أَن يَبْلُغَ مَحِلَّهُۥ وَلَوْلَا رِجَالٌ مُّؤْمِنُونَ وَنِسَآءٌ مُّؤْمِنَٰتٌ لَّمْ تَعْلَمُوهُمْ أَن تَطَـُٔوهُمْ فَتُصِيبَكُم مِّنْهُم مَّعَرَّةٌۢ بِغَيْرِ عِلْمٍ لِّيُدْخِلَ ٱللَّهُ فِى رَحْمَتِهِۦ مَن يَشَآءُ لَوْ تَزَيَّلُوا۟ لَعَذَّبْنَا ٱلَّذِينَ كَفَرُوا۟ مِنْهُمْ عَذَابًا أَلِيمًا

   It is they who disbelieved and turned you away from the Sacred Mosque and (turned off) the offering withheld from arriving at its destined place; and were it not for the believing men and the believing women, whom, not having known, you might have trodden down, and thus something hateful might have afflicted you on their account without knowledge-- so that Allah may cause to enter into His mercy whomsoever He pleases; had they been widely separated one from another, We would surely have punished those who disbelieved from among them with a painful punishment.