[{"id":"00572182-s","lexname":"adj.all","members":[{"lemma":"impregnable","sense":{"id":"impregnable%5:00:00:unconquerable:00"},"poskey":"a"},{"lemma":"inexpugnable","sense":{"id":"inexpugnable%5:00:00:unconquerable:00"},"poskey":"a"}],"definition":["incapable of being overcome, challenged or refuted"],"example":["an impregnable argument","impregnable self-confidence"],"ili":"i3177","partOfSpeech":"s","similar":["00571832-a"]}]