(ن) خَلَا يَخْلُوْ خَلَاءً وَخَلْوَةًkhalā yakhlū khalāʾan wa-khalwatan: (of a place or time) to be empty; to be alone; to pass by (time carries the sense of passing, so it is also used in the sense of passing or going away). ﴿تِلْكَ اُمَّةٌ قَدْ خَلَتْ﴾ (Al-Baqarah 2:134); ﴿وَاِنْ مِّنْ اُمَّةٍ اِلَّا خَلَا فِيْهَا نَذِيْرٌ﴾ (Fāṭir 35:24)
خَلَا اِلٰىkhalā ilā: when this verb comes with اِلٰىilā, it means to meet in private. ﴿وَاِذَا خَلَا بَعْضُهُمْ اِلٰى بَعْضٍ﴾ (Al-Baqarah 2:76)
Form II (tafʿīl) خَلّٰى يُخَلِّيْ تَخْلِيَةًkhallā yukhallī takhliyatan: to let someone pass, to leave free. ﴿فَخَلُّوْا سَبِيْلَهُمْ﴾ (At-Tawbah 9:5)
Form V (tafaʿʿul) تَخَلّٰى يَتَخَلّٰى تَخَلِّيًاtakhallā yatakhallā takhalliyan: to make oneself empty, to withdraw. ﴿وَاَلْقَتْ مَا فِيْهَا وَتَخَلَّتْ﴾ (Al-Inshiqāq 84:4).