Official betting terms are simple, unmistakable, time-honored declarations like: bet, raise, call, fold, check, all-in, pot (in pot-limit only), and complete. Regional terms may also meet this standard. The use of non-standard language is at player’s risk because it may result in a ruling other than what the player intended. It is the responsibility of players to make their intentions clear. See also Rules 40 & 49.
-- POKER TOURNAMENT DIRECTORS ASSOCIATION
Rules Version 2013 TDA Rules Version 1.1, released August 11, 2013
For instance the phrase "I'll put you all-in" is not a legal bet. If you are heads up and you want to raise to what a player has, then declare yourself all-in.