Exciting news! With our new Ad-Free Premium Subscription you can enjoy a distraction-free browsing experience while supporting our site's growth. Without ads, you have less distractions and enjoy faster page load times. Upgrade is optional. Find out more here, and enjoy ad-free learning with us!

What does this phrase mean?

How terrible clever?

how terribly clever.
how awfully clever.
how extremely clever.
how very clever.
all mean - 'it is clever'