Definition from Wiktionary, the free dictionary
contrary; opposite; backwards; to go against; to oppose; to betray; to rebel
all right; capable; competent; OK; okay; to go; to do; to travel; temporary; to walk; will do; behavior; conduct; a row; profession; professional
|simp. and trad.
Literally: make the boat go against the current
- to diligently engage in one's studies (like a boat going against the currents)
- to go against the tide