IPA: /ˈraɪtli/
KK: /ˈraɪtli/
In a correct or proper way; in a manner that is just or fair.
She rightly pointed out the mistakes in the report.
Rightly → It is formed from "right" (from Old English "riht", meaning correct or just) and "-ly" (meaning in a manner of). The word "rightly" means in a correct or just manner.
Think of doing something in a 'correct' way ('right') — the '-ly' just means in that manner. This helps you remember that 'rightly' means to do something correctly.