A quick google search on the word uphill gave me the following results:
Uphill [adverb] : towards the top of hill or slope [adjective] : slopping upwards [noun] : An upward slop
So, I'm trying to use it in a sentence like below :
"It was a great time there, and the learning curve has always been uphill"
Meaning to say "It was a great time there, and every time was a positive learning opportunity"
Made a further google search and found following articles:
The Learning Curve ― The first steps are uphill
Travel: Europe – It's an uphill learning curve – The Independent
And in the above articles, uphill seems to be used to mean difficult, like climbing a hill.
Is it a correct usage of 'uphill' with 'learning curve' to mean it as a positive learning experience considering that uphill is upwards?