intense
1 adj Intense is used to describe something that is very great or extreme in strength or degree.
He was sweating from the intense heat..., His threats become more intense, agitated, and frequent.
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intensely adv
The fast-food business is intensely competitive.
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intensity (intensities plural) n-var usu with poss
The attack was anticipated but its intensity came as a shock.
2 adj If you describe an activity as intense, you mean that it is very serious and concentrated, and often involves doing a great deal in a short time.
The battle for third place was intense...
3 adj If you describe the way someone looks at you as intense, you mean that they look at you very directly and seem to know what you are thinking or feeling.
(=piercing)
I felt so self-conscious under Luke's mother's intense gaze...
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intensely adv ADV with v
He sipped his drink, staring intensely at me.
4 adj If you describe a person as intense, you mean that they appear to concentrate very hard on everything that they do, and they feel and show their emotions in a very extreme way.
I know he's an intense player, but he does enjoy what he's doing...
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intensity n-uncount
His intensity and the ferocity of his feelings alarmed me.