hard to understand; incomprehensible; unintelligible
to be evident; to be obvious; to understand completely
understanding completely; understanding all there is to know
to not understand; to not (quite) know; to be unsure; to be unable to tell
to understand (each other); to comprehend
understanding (of people's circumstances and feelings); perceptiveness; sympathy; wisdom
understanding completely; understanding all there is to know
understanding (of people's circumstances and feelings); perceptiveness; sympathy; wisdom
quick understanding; catching on quickly; (beginner's) guide; easy guide (to); quick start guide
quick understanding; catching on quickly; (beginner's) guide; easy guide (to); quick start guide