"susceptible" in the adjective sense
1. susceptible
often followed by `of' or `to') yielding readily to or capable of
"susceptible to colds"
"susceptible of proof"
2. susceptible
easily impressed emotionally
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License