2 Timothy 1:6
Stir up = "to kindle afresh" to re-kindle. (as with bellows). "To keep the fire going", to set a small ember blazing up again. (The single occurance of this word.)
This does not mean that Timothy had let the gift die, althought the word may mean "rekindle" or "relight," [like other words that begin with "re-" but doesn't necessary mean "again", i.e. Adam and Eve were told to "replenish the earth." Genesis 1:28. ]
Gift = supernatural gifts were given by laying on of an apostles' hands - Acts 8:18 This was done along with the laying on of henda of the presbyter, 1 Timothy 4:14.