4-Bet
4-Bet（四次加注）
A 4-bet is the fourth aggressive action in a preflop sequence (blind → raise → 3-bet → 4-bet). It represents a very strong range in most contexts but can also be used as an advanced bluff (light 4-bet). 4-betting effectively requires understanding opponent 3-bet ranges, stack depth implications, and position. The size of a 4-bet is usually smaller relative to the 3-bet than the 3-bet was to the original raise.
Example
UTG opens to 3bb, BTN 3-bets to 9bb, and you 4-bet from the SB to 22bb with AA for value.
Related Terms
More Betting Terms
3-Bet
The third bet in a betting round — typically a re-raise preflop.
C-Bet (Continuation Bet)
A bet made by the preflop raiser on the flop, regardless of whether they connected.
Value Bet
A bet made with a strong hand to get called by worse hands.
Check-Raise
Checking first, then raising after an opponent bets.
Donk Bet
A bet made into the preflop raiser by a player who is out of position.
Overbet
A bet larger than the current pot size.