The term "most farseeing" is commonly used to describe someone who has a clear vision of the future and is able to plan accordingly. However, there are a number of antonyms - words with opposite meanings - that could be used to describe someone who lacks this ability. These might include words like short-sighted, nearsighted, myopic, and narrow-minded. Alternatively, someone who is not farsighted might be described as being short-term, reactive, or impulsive, rather than taking a long-term and strategic approach. In general, the opposite of someone who is most farseeing is someone who lacks this ability, and may experience difficulties in planning and decision-making as a result.