Very large or extraordinarily great in magnitude
1) The child’s magnamous sneakers caused him to fumble with every step.

2) The magnamous fish did not fit into the pouch of the predatory pelican.

3) A 100% on the Algebra 2 Regents Examination could only be attained by an individual with a magnamous IQ.
by Merriam–Webster.com July 10, 2019
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The Latin meaning for "Great Work". Usually meaning the greatest, most popular, pinnacle, or most renowned achievement of an artist, artist or composer. Or a "masterpiece"

Albiet in the case of George R.R. Martin, this refers to a big fat lazy and stinky turd (sometimes whistling in the wind for at least 8 years).
George R.R. Martin choked on a roasted water chestnut and died, leaving his Magnam Opus in his undergarments.
by UrBud2018 February 16, 2018
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An amalgamation of the words Magnetic and Dynamic. Derived from the transcripts of an Instagram conversation between two old friends reunited whom both share the star sign of Scorpio and in turn described them selves as magnetic and dynamic.
Both being Scorpios, Anton and Darlene are magnamic individuals.
by Antonymous May 22, 2021
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Extreme anger or discontent. Polar opposite of euphoric.
My friend Jimmy on my baseball team was magnamic when he struck out. He would yell and punch walls.
by Equable247 March 20, 2022
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