The word(s) "humble" appears 18 time(s) in 18 verse(s) in Quran in Abdullah Yusuf Ali translation.

(11) Those who humble themselves in their prayers;

(12) We inflicted Punishment on them, but they humbled not themselves to their Lord, nor do they submissively entreat (Him)!-

(13) "Go back to them, and be sure we shall come to them with such hosts as they will never be able to meet: We shall expel them from there in disgrace, and they will feel humbled (indeed)."

(14) For Muslim men and women,- for believing men and women, for devout men and women, for true men and women, for men and women who are patient and constant, for men and women who humble themselves, for men and women who give in Charity, for men and women who fast (and deny themselves), for men and women who guard their chastity, and for men and women who engage much in Allah's praise,- for them has Allah prepared forgiveness and great reward.

(15) And thou wilt see them brought forward to the (Penalty), in a humble frame of mind because of (their) disgrace, (and) looking with a stealthy glance. And the Believers will say: "Those are indeed in loss, who have given to perdition their own selves and those belonging to them on the Day of Judgment. Behold! Truly the Wrong-doers are in a lasting Penalty!"

(16) They will come forth,- their eyes humbled - from (their) graves, (torpid) like locusts scattered abroad,

(17) Those who resist Allah and His Messenger will be humbled to dust, as were those before them: for We have already sent down Clear Signs. And the Unbelievers (will have) a humiliating Penalty,-

(18) Had We sent down this Qur'an on a mountain, verily, thou wouldst have seen it humble itself and cleave asunder for fear of Allah. Such are the similitudes which We propound to men, that they may reflect.