I want to use a word to describe what others taught me a long time ago. Now I think of it clearly. What's the best word to use? Or use idioms

I want to use a word to describe what others taught me a long time ago. Now I think of it clearly. What's the best word to use? Or use idioms


It's fresh in my mind
Thank you



What are the adjectives of shape
Two words


Round (plump appearance); round (plump and symmetrical); fat (swelling and swelling); fat (fat and strong); thin (thin and dry)
)Thin and small