وَإِذَا تُتْلَىٰ عَلَيْهِمْ ءَايَـٰتُنَا بَيِّنَـٰتٍ تَعْرِفُ فِى وُجُوهِ ٱلَّذِينَ كَفَرُوا۟ ٱلْمُنكَرَ ۖ يَكَادُونَ يَسْطُونَ بِٱلَّذِينَ يَتْلُونَ عَلَيْهِمْ ءَايَـٰتِنَا ۗ قُلْ أَفَأُنَبِّئُكُم بِشَرٍّ مِّن ذَٰلِكُمُ ۗ ٱلنَّارُ وَعَدَهَا ٱللَّهُ ٱلَّذِينَ كَفَرُوا۟ ۖ وَبِئْسَ ٱلْمَصِيرُ Qur’an Al-Hajj (22:72)Waitha tutla AAalayhim ayatuna bayyinatin taAArifu fee wujoohi allatheena kafaroo almunkara yakadoona yastoona biallatheena yatloona AAalayhim ayatina qul afaonabbiokum bisharrin min thalikum alnnaru waAAadaha Allahu allatheena kafaroo wabisa almaseeru
Lit., "worse than this" - i.e., "more painful than the repugnance which you feel with regard to God's messages".
Munkar; (1) a refusal to accept something offered; (2) a denial of something stated or pointed out; (3) a feeling of disapproval or active aversion, or disgust.
There is irony here. 'You think Allah's revelations and Signs are distasteful to you! There will be something far more distasteful to you if you do not repent! What do you say to the inevitable Punishment.