足下

you (used to a superior or between persons of the same generation) / below the foot

excessive

foot / to be sufficient / ample

down / downwards / below / lower / later / next (week etc) / second (of two parts) / to decline / to go down / to arrive at (a decision, conclusion etc) / measure word to show the frequency of an action

lit. a thousand mile journey begins with the first step / fig. big accomplishments come from an accumulation of little achievements made one by one