altitude

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Related to altitudinal: altitudinal hemianopia, Altitudinal field defect

be in (one's) altitudes

obsolete To be inebriated. That gentleman becomes most uncivil when he is in his altitudes.
See also: altitude

in the altitudes

Intoxicated, with the connotation of being "high" (overly cheerful, unable to focus) as well. A: "Don't mind him, he's just in the altitudes." B: "Seriously? How is he drunk already?" Once I get in the altitudes, I usually can't stop giggling!
See also: altitude