Choose the word which expresses the meaning of the underlined word in the sentence: It was an ignominious defeat for the team. 

Concept: The word 'ignominious' refers to  'causing public shame or disgrace.' This word is used to show the negative event or expression. 
Option A is also a negative expression. It refers to the same meaning as the ignominious has.
Option B: 'Admirable' is not a negative expression. It refers to deserving or arousing respect.
Option C: 'Unaccountable' refers to unable to be understood. 
Option D: 'Worthy' is a positive word or expression. It indicates one who deserves appreciation and respect.
Hence, option A is the correct answer.