“GL” stands for “good luck” in shorthand.
This is often a tag that is used by gamers as a well-wishing for the other person’s victoriousness. It might also be said to someone who has an audition, a sports match, a date, or a job interview. You might also wish someone good luck for any type of activity in which they hope to have a successful outcome, like fishing, or jogging a full four miles instead of three.
G – Good
L – Luck
Example 1 with “gl” (G- Good, L- Luck)
Player 1: This is it. Final level
Player 2: gl hf kick butt
Player 1: Got it.