INTENSE

[adjective] - extreme and forceful or (of a feeling) very strongintense cold/heat/hatredan intense flavour/colourWhat struck her was the intense competition between the two brothers.He suddenly felt an intense pain in the lower part of his back.At midday the light is at its most intense.A person might be described as intense if they have strong emotions and opinions which they talk about very seriously in a way that demands all of your attention.You won't have much of a laugh with Andrew - he's rather intense.