- RAD
- It was cool in the eighties
- Cool, in the '90s
- Energy unit
- Extremist
- Awesome!
- Cool
- Marvelous, slangily
- One-half a diam.
- Cool, these days
- Physicist's unit
- Totally awesome
- Half a diam.
- Totally tubular
- Awesomesauce
- Sick, bro!
- Way cool
- Compliment in an '80s skater flick
- Unit of nuclear absorption
- Awesome!, in '80s slang
- Great, in '80s slang
- Slang for "cool" that I think is maybe retro cool again
- Angle measurement (abbr.)
- Wicked!
- Far out!
- Awesome, to a BMXer
- Trig function
- Unit worth 0.01 J/kg
- X-ray unit
- Nice!
- Skatepark "cool"
- Awesome, in kidspeak
- Kewl
- Skatepark "great"
- X-ray spec
- Fantastic!
- X-ray dose
- Excellent, slangily
- Outstanding!
- Surfspeak adjective
- Alternative to degrees, in math: Abbr.
- Sweet!, but in a Members Only jacket
- Gnarly
- Suh-weet!
- This is really good, dude!
- Wicked kin
- Totally fab
- Uncool cool?
- Capital of the 1990s?
- Not at all square, once
- Right on!
- Sweet popular in the '80s?
- Retro cool
- Compliment given to Doc Martens
- Super
- Cool, nowadays
- Exclamation akin to "Gnarly!"
- Really cool
- Wonderful, in slang
- Cool!, once
- Sweet!
- Out of sight!
- Cool, updated
- Groovy!
- Teen's "Terrific!"
- Awesome! addition to this puzzle's three longest entries
- Awesome, dude!
- Cowabunga!
- Tubular!
- X Games adjective
- Totally cool, man!
- Angle meas.
- Too much!
- Surfer's "Tubular!"
- Passé cousin of "awesome"
- Gnarly, dude!
- Totally awesome, dude!
- Dope
- Dope, datedly
- Brit. dance org.
- Like, totally ___, dude!
- Great, slangily
- Super, man!
- Phat! relative
- Excellent!
- Groovy relative?
- More than cool
- Far out, man!
- Gnarly relative
- Far out, dude!
- Groovy cousin
- Cool relative
- Way cool, dude!
- Sick!
- Cool kin
- Wicked cool
- Totally gnarly!
- Totally sweet!
- Extremist, for short
- Great, to teens
- Swell, '90s-style
- Wonderful, in Valspeak
- Phat
- Wonderful, slangily
- Cool, man!
- Groovy, today
- Wonderful
- Like, awesome!
- Surfspeak approval
- Surfspeak compliment
- Impressive, so to speak
- '90s "Cool!"
- Cool, a while back
- Ninja Turtles exclamation
- Retro-remarkable
- Old-style "Awesome!"
- '90s "Awesome!"
- '90s "Nifty!"
- Very cool
- Angular meas. unit
- Afraid in Scotland.
- Ready: Scot.
- Proposed photometric unit.
- Radical: Abbr.
- A basic number in mathematics: Abbr.
- Method of communication: Abbr.
- Wheel: Ger.
- Root: Abbr.
- Auto front: Abbr.
- Mathematical number: Abbr.
- Abbreviation in math.
- Line in geometry: Abbr.
- Wheel, in Berlin.
- Nuclear unit
- Unit in physics
- Chernobyl unit
- Rem's cousin
- Heating unit: Abbr.
- Circle line: Abbr.
- Unity of energy
- Curies' discovery: Abbr.
- TV's precursor
- Dosimetry unit
- Atomic energy unit
- Geiger relative
- Physicist's measure
- Unit of X-ray dosage
- Radiation unit
- Wonderful: Sl.
- Talia Shire film: 1986
- Really great, in teenspeak
- Swell; terrific
- Groovy, these days
- Marvy
- Terrific, slangily
- Def, to a slangster
- It's equal to 100 ergs per gram
- Wild! to a dude
- Physics unit
- Dosage unit
- Dosage unit at a reactor
- Fine, slangily
- Way out!
- Cooler than cool
- Far out!” nyt 2004 RAD Out of sight!"
- 90's kids' catchword
- Unit of 100 ergs per gram
- Circle meas.
- Supercool
- Totally cool, in '90s slang
- Lovely!, in dated slang
- Outstanding, man!
- Cool, dude!
- Cool!, in surfer slang
- Excellent, dude!
- Groovy, updated
- Nuclear plant unit
- Old dope?
- Totally cool
- Def
- Brilliant, dude!
- Sick, dude!
- Meas. equal to 180°/π
- Coolio!
- Stellar!
- Trigonometry meas.
- That was a ___ joke!, Dana sputtered.
- So cool!
- Badass
- Bitchin'
- Dated expression of appreciation
- 1986 BMX movie
- Aptly titled 1980s BMX movie
- '90s kids' shout
- 'Neato!', '90s-style
- '90s kids' exclamation
- Like an '80s band
- What Dead Kennedys and Minor Threat were to skaters in the '80s
- What Relient K told us to "Be"
- What The Dead Kennedys were, to skaters
- 'Coolness!'
- Relient K "Be ___"
- What Dead Kennedys were to skaters in the '80s
- What Minor Threat was in the '80s?
- Bouncing Souls "You're So ___"
- Totally sick, brah!
- California cool
- Cool, to Californians
- Terrif
- Great!
- X-ray dosage unit
- Far out! (today)
- Cool, now
- Far out! to a physicist?
- Cool, to '80s teens
- Sweeeeet!
- Awesome! '80s style
- Neato!
- X-ray dose unit
- Terrific, in '80s slang
- Extreme
- Energy-absorption unit
- Unit of absorbed energy
- Awesome! of the '80s
- Awesome! in the '90s
- Cool, a few decades ago
- Cool, old-school
- Far out or "awesome" relative
- 1986 BMX film
- It was terrific in the '90s
- Far out! kin
- Far out, later
- Cool, retro
- Neato kin, later
- X-raying unit
- Awesome, in the '80s
- Cool, '80s-style
- What was cool in the '80s?
- Cool, in dated slang
- Cool beans!
- Groovy, in the '80s
- Like, totally gnarly
- Groovy '90s style
- Groovy currently
- Extreme to a hipster
- Unit of energy
- Cool!: sl.
- Cosmic!
- Outstanding!: sl.
- Slangy wonderful
- Unit at a reactor
- Awesome! once
- Awesome! in old slang
- Far out! in the 1980s
- Neat!
- Totally rockin'
- Awesome kickflip!
- Outrageous!
- Trig unit
- Epic
- Sick, so to speak
- Outta sight
- Squid's ink holder
- Super-awesome
- Wicked, but good
- Good, at the beach
- Impressive, dude!
- Impressive, to surfers
- Cool, totally
- Totally wicked!
- Awesome! in the 1980s
- Excellent, in 1980s slang
- Far out! in dated slang
- Geiger counter unit
- Unit akin to the roentgen
- Excellent, in dated slang
- Impressive, in dated slang
- Wicked, so to speak
