Green’s Dictionary of Slang

strong adv.

1. [early 19C+] keenly, enthusiastically.

2. [1910s; 2010s] intimately.

In derivatives

strong-oh (adj.)

[1900s] (Aus.) duplicitous, deceptive.

In phrases

come out strong (v.)

[late 19C] to act generously.

draw it strong (v.)

[mid–late 19C] to exaggerate.

go (it) strong (v.) [go it v. (2)]

1. [mid-19C+] to speak frankly, to act forcefully.

2. [1910s] (Aus.) to act unrestrainedly, e.g. as regards sex.

play (it) strong (v.)

[1950s–70s] (US black) to act in an aggressive, determined manner.