IPA: /ˈsɛnʃəntli/
KK: /sɛnˈtʃɛntli/
In a way that shows awareness or the ability to perceive and feel things.
The creature moved sentiently, responding to its surroundings with curiosity.
Sentiently → It is formed from "sentient" (from Latin "sentientem", meaning feeling or perceiving) and the suffix "-ly" (meaning in a manner of). The word "sentiently" means in a manner that is capable of feeling or perception.
Think of 'sentient' as being able to 'feel' or 'perceive' — and '-ly' indicates the manner. So, when something is done 'sentiently', it is done in a way that involves feeling or awareness.