| 2026-08-31 | "Far out!" |
| 2026-08-23 | "Awesome!" |
| 2026-08-12 | "Sick, dude!" |
| 2026-05-27 | "Far out" |
| 2026-03-22 | "Totally tubular!" |
| 2025-11-30 | "Awesome!" |
| 2025-11-12 | "Tubular!" |
| 2025-06-21 | Gen-Xer's "excellent" |
| 2025-01-23 | Beyond cool |
| 2025-01-11 | "Tubular!" |
| 2024-10-21 | Totally wicked |
| 2024-06-25 | "So cool!" |
| 2024-01-29 | "Gnarly!" |
| 2023-08-30 | "That was a ___ joke!," Dana sputtered. |
| 2023-07-18 | "Far out!" |
| 2023-03-24 | Gnarly |
| 2023-03-23 | "Far out!" |
| 2023-03-05 | "Cool!" |
| 2022-10-23 | "Stellar!" |
| 2022-08-27 | Trigonometry meas. |
| 2022-04-14 | "Sweet!" |
| 2022-03-02 | "Groovy!" |
| 2022-01-14 | "Coolio!" |
| 2021-12-11 | "Cool, dude!" |
| 2021-01-21 | "Sick, dude!" |
| 2021-01-18 | Far out |
| 2020-12-28 | "Gnarly, dude!" |
| 2020-09-17 | Meas. equal to 180°/pi |
| 2020-04-02 | Dope |
| 2020-03-20 | "Sweet!" |
| 2019-12-17 | Totally cool |
| 2019-07-18 | "Wicked cool!" |
| 2019-03-07 | "Sick, dude!" |
| 2019-03-04 | "Brilliant, dude!" |
| 2019-01-11 | "Sick, dude!" |
| 2018-12-09 | "Far out!" |
| 2018-08-26 | "Awesome!" |
| 2018-07-08 | Way cool |
| 2018-06-26 | "Way cool!" |
| 2018-06-14 | "Groovy," updated |
| 2018-06-11 | "Cool!" |
| 2018-02-06 | Wicked cool |
| 2017-12-17 | "Totally awesome!" |
| 2017-09-01 | Very cool |
| 2017-06-28 | "Far out!" |
| 2017-04-08 | Def |
| 2017-02-10 | Far out |
| 2016-12-25 | "Gnarly!" |
| 2016-07-02 | Old dope? |
| 2016-06-26 | "Kewl!" |
| 2016-05-23 | Totally cool |
| 2016-03-20 | "Super cool!" |
| 2016-02-22 | "Cool, man!" |
| 2016-02-14 | "Sweet!" |
| 2016-01-31 | Cool, once |
| 2016-01-09 | "Sick" |
| 2015-11-25 | "Totally cool, man!" |
| 2015-05-13 | Groovy, updated |
| 2015-04-09 | Nuclear plant unit |
| 2014-11-14 | "Wicked!" |
| 2014-11-01 | Wicked |
| 2014-04-15 | "Cool!," in surfer slang |
| 2014-03-24 | "Excellent, dude!" |
| 2014-03-11 | "Far out, man!" |
| 2013-08-19 | "Totally awesome!" |
| 2013-03-21 | "Wicked!" |
| 2013-01-16 | "Awesome!" |
| 2012-09-26 | X-ray unit |
| 2011-12-09 | "Awesome!" |
| 2011-11-30 | "Way cool!" |
| 2011-08-07 | Gnarly |
| 2010-11-12 | "Outstanding, man!" |
| 2010-07-16 | Gnarly |
| 2010-04-18 | Far out |
| 2010-03-14 | "Lovely!," in dated slang |
| 2010-03-05 | X-ray spec? |
| 2009-11-24 | "Way cool!" |
| 2009-11-16 | "Gnarly!" |
| 2009-06-12 | Excellent, slangily |
| 2009-05-17 | Supercool |
| 2009-02-03 | "Far out!" |
| 2008-12-26 | Far out |
| 2008-12-23 | "Awesome!" |
| 2008-12-03 | Like, awesome |
| 2008-08-11 | Way cool |
| 2008-05-05 | Totally cool, in '90s slang |
| 2008-03-23 | Supercool |
| 2008-02-17 | "Awesome!" |
| 2007-11-22 | "Gnarly!" |
| 2006-12-10 | Far out |
| 2006-11-10 | "Gnarly!" |
| 2006-09-24 | "Way cool!" |
| 2006-08-09 | Gnarly |
| 2006-02-23 | "Awesome!" |
| 2005-10-19 | Circle meas. |
| 2005-10-07 | Awesome |
| 2004-12-05 | "Far out!" |
| 2004-07-06 | "Out of sight!" |
| 2004-06-18 | Unit of 100 ergs per gram |
| 2004-04-23 | 90's kids' catchword |
| 2004-02-22 | Far out |
| 2004-01-06 | "Awesome!" |
| 2003-08-22 | Cooler than cool |
| 2003-06-13 | Awesome |
| 2002-12-12 | "Way cool!" |
| 2002-09-18 | "Way out!" |
| 2002-01-27 | "Far out!" |
| 2000-12-03 | "Awesome!" |
| 2000-05-04 | Fine, slangily |
| 2000-02-01 | "Far out!" |
| 1999-11-13 | "Cool!" |
| 1999-10-22 | X-ray spec |
| 1999-08-24 | "Awesome!" |
| 1999-03-23 | Dosage unit |
| 1999-02-24 | Dosage unit at a reactor |
| 1999-02-23 | "Far out!" |
| 1998-12-03 | "Far out!" |
| 1998-09-04 | "Awesome!" |
| 1998-01-18 | "Awesome!" |
| 1998-01-13 | Physics unit |
| 1998-01-04 | "Wild!" to a dude |
| 1997-12-10 | "Far out" |
| 1997-05-09 | It's equal to 100 ergs per gram |
| 1997-05-02 | Def, to a slangster |
| 1997-01-06 | "Far out" |
| 1996-09-25 | Terrific, slangily |
| 1996-08-27 | "Cool" |
| 1995-11-27 | "Cool!" |
| 1995-01-03 | "Far out" |
| 1994-10-27 | Groovy, these days |
| 1994-06-18 | Far out |
| 1994-05-01 | Marvy |
| 1994-03-12 | Far out |