Strong's #302: an (pronounced an)
 a primary particle, denoting a supposition, wish, possibility or uncertainty:--(what-, where-, wither-, who-)soever. Usually unexpressed except by the subjunctive or potential mood. Also contracted for 1437.
Thayer's Greek Lexicon:
 ̓́ 
 
  an 
 
 1) has no exact English equivalent, see definitions under AV
 
  Part of Speech: particle
Relation: a primary particle
 
Usage:
This word is used 184 times:
John 9:41: "If ye were blind,  ye should have no sin: but"
John 11:21: "my brother had not  died."
John 11:22: "even now, whatsoever  thou wilt ask of God, God will give"
John 11:32: "my brother had not  died."
John 13:24: "to him, that he should ask who  it should be of whom he spake."
John 14:2: "many mansions: if it were not  so, I would have told you. I go to prepare"
John 14:7: "If ye had known me,  ye should have known my Father also:"
John 14:13: "And  whatsoever ye shall ask in my name, that"
John 14:28: "If ye loved me,  ye would rejoice, because I said, I go"
John 15:16: "fruit should remain: that  whatsoever ye shall ask of the Father"
John 15:19: "world, the world  would love his own: but because"
John 16:13: "of himself; but  whatsoever he shall hear, that shall he speak: and"
John 16:23: "verily, I say unto you,  Whatsoever ye shall ask the Father"
John 18:30: "not a malefactor, we would not  have delivered him up unto thee."
John 18:36: "world, then would my servants  fight, that I should not be delivered"
John 20:23: " Whose soever sins ye remit, they are remitted unto them; and whose soever"
John 20:23: "sins ye remit, they are remitted unto them;  and whose soever sins ye retain, they are retained."
Acts 2:12: "saying one to another, What  meaneth"
Acts 2:21: "And it shall come to pass,  that whosoever shall call on the name"
Acts 2:35: "Until  I make thy foes thy footstool."
Acts 2:39: "to all that are afar off,  even as many as the Lord our"
Acts 2:45: "them to all men, as  every man had need."
Acts 3:19: "when the times of refreshing  shall come from the presence of the"
Acts 3:22: "shall ye hear in all things  whatsoever"
Acts 3:22: "shall ye hear in all things  whatsoever"
Acts 3:23: "soul, which will not  hear that prophet, shall be destroyed"
Acts 4:35: "and distribution was made unto every man  according as he had need."
Acts 5:24: "of them whereunto this"
Acts 5:24: "of them whereunto this  would grow."
Acts 7:3: "come into the land  which I shall show thee."
Acts 8:19: "this power, that  on whomsoever I lay hands, he may receive"
Acts 8:31: "said, How  can I, except some man should guide"
Acts 10:17: "this vision which he had seen  should mean, behold, the"
Acts 15:17: "the residue of men  might seek after the Lord, and"
Acts 17:18: "some said, What  will this babbler say?"
Acts 17:20: "therefore what these things  mean."
Acts 18:14: "lewdness, O ye Jews, reason  would that I should bear with you:"
Acts 21:33: "and demanded who  he was, and what he had"
Acts 26:29: "And Paul said,  I would to God, that not only"
Romans 3:4: "a liar; as it is written, That  thou mightest be justified in thy"
Romans 9:15: "he saith to Moses, I will have mercy  on whom I will have mercy, and I will have compassion"
Romans 9:15: "on whom I will have mercy, and I will have compassion  on whom I will have compassion."
Romans 9:29: "had left us a seed,  we had been as Sodom, and"
Romans 9:29: "we had been as Sodom, and  been made like unto Gomorrah."
Romans 10:13: "For  whosoever shall call upon the name of the Lord"
Romans 16:2: "that ye assist her in  whatsoever business she hath need of you:"
1 Corinthians 2:8: "had they known it, they would not  have crucified the Lord of glory."
1 Corinthians 4:5: "nothing before the time,  until the Lord"
1 Corinthians 7:5: "Defraud ye not one the other,  except it be with consent for"
1 Corinthians 11:25: "this do ye, as oft as  ye drink it, in remembrance of me."