The principle or practice of loyalty and affection toward one's fellow citizens and shared homeland.
From compatriot + -ism (suffix forming systems of belief or practice). This nonce-word attempts to describe the ideology of national brotherhood.
Like 'compatriotic,' 'compatriotism' seems designed to fill a gap that 'patriotism' already covers—yet sometimes we create these words anyway when we want to emphasize the 'shared' or 'together' aspect over pure nationalism.
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