intense(redirected from intenseness)
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crash course (in something)
a short and intense training course in something. I took a crash course in ballroom dancing so we wouldn't look stupid on the dance floor.
A short, intensive training course, as in Daisy planned to take a crash course in cooking before she got married. [Colloquial; mid-1900s]
mod. serious; heavy. Oh, wow! Now that’s what I call intense!