IPA: /ɡəˈlæntli/
KK: /ˈgæl.ənt.li/
In a brave and noble way, often showing courage or chivalry.
He gallantly offered his seat to the elderly woman on the bus.
Gallantly → It is formed from "gallant" (from Old French *galant*, meaning brave or spirited) and the suffix "-ly" (meaning in a manner of). The word "gallantly" means in a brave or spirited manner.
Think of someone being 'brave' ('gallant') and acting 'in that manner' ('-ly'). This helps you remember that gallantly means to act in a brave way.