susceptible

Easily influenced or affected.

Especially sensitive; highly impressionable.

Permitting an action to be performed; capable of undergoing something.

Capable of receiving or admitting, or of being affected; capable of being, in some way, passively affected; capable (of); accessible (to): commonly with of before a state and to before an agency: as, susceptible of pain; susceptible to flattery: but of is sometimes used also in the latter case.

Capable of emotional impression; readily impressed; impressible; sensitive.

Capable of admitting anything additional, or any change, affection, or influence; readily acted upon.

Capable of impression; having nice sensibility; impressible; tender; sensitive

likely to be affected by something

easily influenced or tricked; credulous

especially sensitive, especially to a stimulus