having knowledge of, conscious of, something

knowledgeable

too easily upset or offended

impressionable

giving care and thought to something

attentive, aware

showing that one has understood or noticed

alert, sensitive

quickly or easily receiving impressions; (of feelings) easily hurt or offended; (of instruments) able to record or reproduce small changes

impressionable

(US = skillful) having or showing skill

able, talented

skilled or experienced in something

experienced, informed