Themeless #1 — I only know

German form of Elizabeth

Information places

Like many fandoms

Circuit conductor (often copper)

Warning from a watchdog

The Serenity, e.g.

Russian horse-drawn wagon

Where "22-Across" might be spoken

Toward the stern, at 21-Across

I only know who this is because of the Wilbur Soot ARG

"Joker," "Birds of Prey," or "Deadpool," for instance

Capable of grasping, like some tails

Red vegetable often used for coloring (and bad music puns)

Like some particularly juicy gossip

I only know what this mark on my music meant because my teacher spelled it out for me (then made me play it slowly about a hundred times before I got it)

I only know what this is because of "The Sound of Music" (though I had to learn the correct spelling later, of course)

Subtitle for "Avatar" (abbr.)

Foil alternatives

It tunes to the oboe

___ monster (Arizona lizard)

Anomaly, as of colors in a photo

Arizona tourist attraction

Federal property org. or school LGBTQ org.

"Who ___ that?"

"___ be nice"

Did something upon a star, e.g.

Like some headphones and town ordinances

First word of something that I only know about because it burned down a couple years ago

I only know what this is because my soccer-playing friend used hers (two of them, of course) as a 20 Questions topic once

Discontinued toothpaste, the name of which is now used on electric toothbrushes

Collaborative computer coding congregation

Does as this clue to the Across clues

Like wikiHow presents its guides

Undeciphered writing system that's in Unicode for some reason

Surgeon's knife

German honor

___ Moines

Swiss peak

Prickly biennial plants

Acquiesce

Second squad

It comes before "Poetica," "Arcanum," and "Technica"

"You've been there? ___! We have so much in common!"

Enlightens

Groups of seas and sins

A Greek painter and several pizza joints, e.g.

Golfer Palmer's nickname

Japan's largest active volcano

His day comes after the day this crossword was published

Russian or Ukranian province

Of the underworld

Collecting information

A stone's ___ away

I only know what this is because of Bread & Pastry Weeks on the Great British Baking Show

Underwater biter

Like rubber bands

Old Testament book with only one chapter

Kylo ___

Sob

Make less loose

Snow White's sister

Floral headwear

Demonstrate

___-ling-ling!

The one and only foot part?

Pen filler

Sign of a sellout?

Website & bygone magazine for engineering