IPA: /ˈsɛkjʊlərli/
KK: /sɛk.jʊ.lər.li/
In a way that is not connected to religion or spiritual matters.
The school teaches subjects secularly, focusing on science and mathematics without religious influence.
Secularly → It is formed from "secularis" (from Latin, meaning worldly or temporal) and the suffix "-ly" (meaning in a manner of). The word "secularly" means in a manner that is worldly or not religious.
Think of 'secular' meaning worldly or related to this life, and remember that 'secularly' describes doing something in a worldly manner.