The phrase "haddest no end" implies an inexhaustible supply or an everlasting duration. The antonyms for this phrase would be limited, finite, restricted, bounded, or temporary. When referring to time, the antonyms could be defined as ephemeral, momentary, fleeting, brief, or passing. The opposite of a limitless quantity or measure would be bounded or confined. The antonym of "haddest no end" gives the notion of something with a beginning and an end, restricted by time or measure. In essence, the antonyms of "haddest no end" refer to something that is limited, constrained, or confined in some way.