| Mod |
| Cool |
| Onto |
| Wise |
| Up on |
| On to |
| Savvy |
| Jivey |
| Wise to |
| With it |
| Informed |
| Tuned-in |
| Wise man |
| Drill bit |
| Plugged-in |
| Au courant |
| Cool, once |
| Not square |
| Cool, man! |
| Kind of cat |
| On the ball |
| In the know. |
| Coolly aware |
| Like jazzmen |
| Modern, once |
| Up on trends |
| With it, man |
| Sophisticated |
| With it, once |
| Onto the jive |
| Cadence count |
| Hardly square |
| With it, baby |
| Cool, daddy-o |
| Sarge's shout |
| Clued in, once |
| Cool, for cats |
| Cool, to a cat |
| Marchers' word |
| No fuddy-duddy |
| Like jazz cats |
| Like cool cats |
| Cool, formerly |
| Like some cats? |
| Informed: Slang |
| Lead-in for cat |
| Like cats, once |
| Like human cats |
| Cool, old-style |
| Far from square |
| Like a cool cat |
| On top of things |
| Cool, old-school |
| Up on the latest |
| Au courant, once |
| Cool, '50s-style |
| Not square, once |
| Word before "cat |
| Zoot-suited, say |
| One, in marching |
| Cool, like a cat |
| Old-school "cool |
| Wise to the jive |
| Not squaresville |
| Cool, to jazzmen |
| Not at all square |
| Cool, 1940s-style |
| Cool, decades ago |
| Jitterbug's "cool |
| Knowing what's up |
| Like '40s boppers |
| Tuned in, daddy-o |
| With it, slangily |
| Word in a cadence |
| Cool, in the '40s |
| Cool, in the '50s |
| Drillmaster's word |
| Cool, as a daddy-o |
| Like a zoot suiter |
| Onto, in jive talk |
| Assist, in "Texian |
| Cool, in the 1940s |
| Cool, in jive talk |
| With it, old-style |
| Cool, in old slang |
| In like an old cat? |
| In style, old-style |
| In, back in the day |
| Like some jazz cats |
| With it, 40's-style |
| With it familiarly |
| With it, 50's-style |
| With it, old-school |
| Hardly squaresville |
| Cool, in dated slang |
| In the old grooveroo |
| With it" in the 40's |
| Cool like a cool cat |
| Cool, to a 1940s cat |
| Like some jazzy cats |
| With it, at one time |
| With it, in the 50's |
| In the know, daddy-o |
| Drill sergeant's call |
| 1950s slang for "cool |
| Cool, in old parlance |
| Far from squaresville |
| Up on things, daddy-o |
| With it, if you're 78 |
| Not square, to a "cat |
| With-it, 1940's style |
| Drill-sergeant's word |
| With it," in old slang |
| Aware of what's ''in'' |
| Cool, to a jive talker |
| Cool, to a zoot suiter |
| In the know, old-style |
| Like a cat of the '40s |
| Drill sergeant's intro |
| Cool, in jazz bar slang |
| Cool, to the older cats |
| It was cool in the '40s |
| Like "cats" in the 40's |
| Like certain 1940s cats |
| Part of a cadence count |
| Are You --- to the Jive? |
| In the know, in the '40s |
| Informed, in older slang |
| Not some fuddy-duddy, maN |
| Up on things, in the '40s |
| ___, two, three, four ... |
| Savvy about (with ''to'') |
| In the know, in old slang |
| What was cool in the '50s? |
| “Cool,” back in the day |
| Like a cool cat of the '40s |
| Far from square, in old slang |
| Sound repeated while marching |
| Viral inflammation, informally |
| It was "real gone" in bygone days |
| Like someone wearing a zoot suit, say |
| Disease that affects the liver, for short |
| Hardly old-fashioned, in an old-fashioned way |