Source : Webster's Revised Unabridged Dictionary (1913)

Impressible \Im*press"i*ble\, a. [Cf. F. impressible.]
   Capable of being impressed; susceptible; sensitive. --
   {Im*press"i*ble*ness}, n. -- {Im*press"i*bly}, adv.

Source : WordNet®

impressible
     adj : easily impressed or influenced; "an impressionable
           youngster"; "an impressionable age" [syn: {impressionable}]
           [ant: {unimpressionable}]