Webster’s Revised Unabridged Dictionary · 1913
Impressionable
Im·pres′sion·a·ble (ĭm·prĕsh′ŭn·ȧ·b'l), a. [Cf. F. impressionnable.] Liable or subject to impression; capable of being molded; susceptible; impressible.
He was too impressionable; he had too much of the temperament of genius. Motley.
A pretty face and an impressionable disposition. T. Hook.