The word(s) "difficult" appears 20 time(s) in 20 verse(s) in Quran in Abdullah Yusuf Ali translation.

(1) Ramadhan is the (month) in which was sent down the Qur'an, as a guide to mankind, also clear (Signs) for guidance and judgment (Between right and wrong). So every one of you who is present (at his home) during that month should spend it in fasting, but if any one is ill, or on a journey, the prescribed period (Should be made up) by days later. Allah intends every facility for you; He does not want to put to difficulties. (He wants you) to complete the prescribed period, and to glorify Him in that He has guided you; and perchance ye shall be grateful.

(2) (Their bearings) on this life and the Hereafter. They ask thee concerning orphans. Say: "The best thing to do is what is for their good; if ye mix their affairs with yours, they are your brethren; but Allah knows the man who means mischief from the man who means good. And if Allah had wished, He could have put you into difficulties: He is indeed Exalted in Power, Wise."

(3) If the debtor is in a difficulty, grant him time Till it is easy for him to repay. But if ye remit it by way of charity, that is best for you if ye only knew.

(4) Allah doth wish to lighten your (difficulties): For man was created Weak (in flesh).

(5) O ye who believe! when ye prepare for prayer, wash your faces, and your hands (and arms) to the elbows; Rub your heads (with water); and (wash) your feet to the ankles. If ye are in a state of ceremonial impurity, bathe your whole body. But if ye are ill, or on a journey, or one of you cometh from offices of nature, or ye have been in contact with women, and ye find no water, then take for yourselves clean sand or earth, and rub therewith your faces and hands, Allah doth not wish to place you in a difficulty, but to make you clean, and to complete his favour to you, that ye may be grateful.

(6) A Book revealed unto thee,- So let thy heart be oppressed no more by any difficulty on that account,- that with it thou mightest warn (the erring) and teach the Believers).

(7) Moses said: "Rebuke me not for forgetting, nor grieve me by raising difficulties in my case."

(8) And strive in His cause as ye ought to strive, (with sincerity and under discipline). He has chosen you, and has imposed no difficulties on you in religion; it is the cult of your father Abraham. It is He Who has named you Muslims, both before and in this (Revelation); that the Messenger may be a witness for you, and ye be witnesses for mankind! So establish regular Prayer, give regular Charity, and hold fast to Allah! He is your Protector - the Best to protect and the Best to help!

(9) That Day, the dominion as of right and truth, shall be (wholly) for (Allah) Most Merciful: it will be a Day of dire difficulty for the misbelievers.

(10) He said: "I intend to wed one of these my daughters to thee, on condition that thou serve me for eight years; but if thou complete ten years, it will be (grace) from thee. But I intend not to place thee under a difficulty: thou wilt find me, indeed, if Allah wills, one of the righteous."