It's the basis for many English words related to feeling, perception, and consciousness, such as:
* Sentient: able to perceive or feel things
* Sentiment: a feeling or opinion
* Sensational: causing a strong feeling of excitement or surprise
* Sensory: relating to the senses
* Intense: having or showing strong feelings or opinions
* Presentiment: a feeling that something is going to happen
* Conscience: the part of you that tells you whether your actions are right or wrong
So, whenever you see the word "sentio" at the root of a word, you can think about the meaning of feeling, perception, or consciousness.