What's the other word?
bash, clash, crash, dash, gash, gnash, hash, lash, mash, slash, smash, splash, thrashThese verbs don't share a root word, but it sure looks like the -ash sound symbolizes collision and violence in English.
So, two questions:
In the opposite direction, there's gloom, gloaming, and glower.
But these gl- words seem to have more to do with soft, slick, slippery surfaces:
Yes, I put gloss in both categories! Maybe it's the missing link. Finally, Ena points out that glad and glee are both happy words, and Leo found a bunch of gl- chemicals that can all be traced to the Greek for "sweet".
Solution
glow, glimmer, gleam, glance, gloss, glitz, glass, glaze, glitter, glimpse, glisten, glint, glare, glory?, glamour?
glade, glen, glib, glob, glide, gloss, glue?, glissando, globglogabgalab (thanks, Peter)
Congratulations to yesterday's solvers Aditi, Anna J., Connor, Ena, Leo S., Maddy, Peter M., and Shelly. Thanks to everybody who made a guess!
Ten years later, Dr. Shapiro revived Puzzle of the Day at Proof School, writing each day's puzzle on a name tag. After 600 puzzles or so, he was just starting to feel normal about students reading his chest all the time when campus closed and the puzzle, like the rest of our lives, moved online. New puzzles are posted daily on school days.
Want to catch up on old PotDs? There's an archive currently containing puzzles from March to December 2020.