Made glad; gladdened or made happy (archaic or poetic past tense of 'glad').
From glad (happy) plus -ed (past tense suffix). This archaic form treats 'glad' as a verb meaning 'to make glad,' though modern English prefers 'gladdened.'
Gladded is an old-fashioned way of saying 'made happy' that you might find in Shakespeare or old poems—language evolves, and some words fade while new ones are born!
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