Hana ichi monme is a Japanese phrase that refers to someone's best effort or complete dedication in their work or task. While this phrase has a strong cultural significance in Japan, there are some synonyms that can be used to convey a similar meaning in English. One of the most common synonyms is "giving it your all," which means to put all your energy and effort into something. Other synonyms include "full commitment," "working your hardest," "total devotion," and "unwavering dedication." All of these synonyms emphasize the importance of giving your best effort and fully dedicating yourself to a goal or endeavor.