Susceptibly is a word that describes how easily influenced or vulnerable one is to a particular thing. There are several synonyms for the word susceptible, which include impressionable, sensitive, receptive, open-minded, and suggestible. These words describe a person's emotional state that can quickly change or be affected by external factors. Moreover, the word can also be replaced with vulnerable or at risk, which is a term used to emphasize the potential danger that a person or thing might encounter. In conclusion, susceptible is a powerful word that describes how much of a threat a person or thing is to their environment and how much of a possibility exists for things to affect them.