Strong
Intense
noun, な adjective
Things that are strong and intense are strong and intense (the "strong" meaning is more along the lines of the "intense" meaning, so not so much like my muscles are super muscly and strong).
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
ひっさびさにタバコ吸ったら、強烈なヤニくらくらっちまったよ。
If I smoke for the first time in a while, I get an intense tobacco high.