English adjective: impenetrable | |||
1. | impenetrable not admitting of penetration or passage into or through | ||
Samples | An impenetrable fortress. Impenetrable rain forests. | ||
Similar | dense, thick | ||
Antonyms | penetrable | ||
2. | impenetrable permitting little if any light to pass through because of denseness of matter | ||
Samples | Dense smoke. Heavy fog. Impenetrable gloom. | ||
Synonyms | dense, heavy | ||
Similar | thick | ||
Antonyms | thin | ||
3. | impenetrable impossible to understand | ||
Samples | Impenetrable jargon. | ||
Similar | incomprehensible, uncomprehensible | ||
Antonyms | comprehendible, comprehensible | ||