Final answer:
The word 'sympathize' can be defined as 'to feel or express sympathy or understanding towards someone or something'.
Step-by-step explanation:
The word 'sympathize' can be defined using the meanings of the suffixes. The suffix '-ize' means 'to make' or 'to cause'. So, when we combine the prefix 'sym-' meaning 'together' and the suffix '-ize', we get 'sympathize', which means 'to feel or express sympathy or understanding towards someone or something'.