The word(s) "well" appears 261 time(s) in 247 verse(s) in Quran in Abdullah Yusuf Ali translation.

(181) To dwell therein for ever: no protector will they find, nor helper.

(182) (Commanding), "Make thou coast of mail, balancing well the rings of chain armour, and work ye righteousness; for be sure I see (clearly) all that ye do."

(183) It is not your wealth nor your sons, that will bring you nearer to Us in degree: but only those who believe and work righteousness - these are the ones for whom there is a multiplied Reward for their deeds, while secure they (reside) in the dwellings on high!

(184) Is he, then, to whom the evil of his conduct is made alluring, so that he looks upon it as good, (equal to one who is rightly guided)? For Allah leaves to stray whom He wills, and guides whom He wills. So let not thy soul go out in (vainly) sighing after them: for Allah knows well all that they do!

(185) That which We have revealed to thee of the Book is the Truth,- confirming what was (revealed) before it: for Allah is assuredly- with respect to His Servants - well acquainted and Fully Observant.

(186) Glory to Allah, Who created in pairs all things that the earth produces, as well as their own (human) kind and (other) things of which they have no knowledge.

(187) Let not their speech, then, grieve thee. Verily We know what they hide as well as what they disclose.

(188) Say, "He will give them life Who created them for the first time! for He is well-versed in every kind of creation!-

(189) And they have invented a blood-relationship between Him and the Jinns: but the Jinns know (quite well) that they have indeed to appear (before his Judgment-Seat)!

(190) If ye reject (Allah), Truly Allah hath no need of you; but He liketh not ingratitude from His servants: if ye are grateful, He is pleased with you. No bearer of burdens can bear the burden of another. In the end, to your Lord is your Return, when He will tell you the truth of all that ye did (in this life). for He knoweth well all that is in (men's) hearts.