ض ی فḍ-y-f
(ض) ضَافَ يَضِيْفُ ضَيْفًاḍāfa yaḍīfu ḍayfan: (1) to incline towards something, to lean (2) to be someone's guest.
ضَيْفٌḍayf (also a noun, ism dhāt): guest (used for masculine, feminine, singular and plural alike, and its plural ضُيُوْفٌḍuyūf also occurs). ﴿هَلْ اَتٰىكَ حَدِيْثُ ضَيْفِ اِبْرٰهِيْمَ الْمُكْرَمِيْنَ﴾ (Adh-Dhāriyāt 51:24)
Form II (tafʿīl) ضَيَّفَ يُضَيِّفُ تَضْيِيْفًاḍayyafa yuḍayyifu taḍyīfan: to receive someone as a guest, to show hospitality. ﴿فَاَبَوْا اَنْ يُّضَيِّفُوْهُمَا﴾ (Al-Kahf 18:77)