The word(s) "either" appears 57 time(s) in 57 verse(s) in Quran in Muhammad Habib Shakir translation.

(21) And do not call besides Allah on that which can neither benefit you nor harm you, for if you do then surely you will in that case be of the unjust.

(22) These are announcements relating to the unseen which We reveal to you, you did not know them-- (neither) you nor your people-- before this; therefore be patient; surely the end is for those who guard (against evil).

(23) And We will either let you see part of what We threaten them with or cause you to die, for only the delivery of the message is (incumbent) on you, while calling (them) to account is Our (business).

(24) And they who give associates (to Allah) say: If Allah had pleased, we would not have served anything besides Allah, (neither) we nor our fathers, nor would we have prohibited anything without (order from) Him. Thus did those before them; is then aught incumbent upon the apostles except a plain delivery (of the message)?

(25) And your Lord has commanded that you shall not serve (any) but Him, and goodness to your parents. If either or both of them reach old age with you, say not to them (so much as) "Ugh" nor chide them, and speak to them a generous word.

(26) Until when he reached the place where the sun set, he found it going down into a black sea, and found by it a people. We said: O Zulqarnain! either give them a chastisement or do them a benefit.

(27) When he said to his father; O my father! why do you worship what neither hears nor sees, nor does it avail you in the least:

(28) Say: As for him who remains in error, the Beneficent Allah will surely prolong his length of days, until they see what they were threatened with, either the punishment or the hour; then they shall know who is in more evil plight and weaker in forces

(29) So we too will produce before you magic like it, therefore make between us and you an appointment, which we should not break, (neither) we nor you, (in) a central place.

(30) Allah is the light of the heavens and the earth; a likeness of His light is as a niche in which is a lamp, the lamp is in a glass, (and) the glass is as it were a brightly shining star, lit from a blessed olive-tree, neither eastern nor western, the oil whereof almost gives light though fire touch it not-- light upon light-- Allah guides to His light whom He pleases, and Allah sets forth parables for men, and Allah is Cognizant of all things.