"Whatever it takes" is a powerful phrase that implies a person's unwavering determination to achieve a goal. To express a similar sentiment, one could use the synonym "by any means necessary". This phrase suggests that an individual is willing to employ any method or strategy necessary to accomplish their objective. Another synonym for "whatever it takes" could be "at any cost", indicating a person's willingness to pay any price, endure any hardship, or make any sacrifice to obtain success. Additionally, one could use the synonym "leave no stone unturned" to convey the idea of thoroughness and exhaustiveness in pursuing a target, leaving no opportunity unexplored or effort spared. In conclusion, these synonyms capture the essence of the phrase "whatever it takes" and embody the spirit of perseverance in any endeavor.