Final answer:
To replace the undefined word without changing the meaning of the sentence, a translator could use the word 'thrilled'.
Step-by-step explanation:
To replace the undefined word without changing the meaning of the sentence, a translator could use the word thrilled. This word indicates extreme excitement and would convey the same sense of joy as 'overjoyed'. An example of using 'thrilled' in the sentence would be: 'Gine was thrilled at being selected the lead in the school play.'
Learn more about Finding a suitable word to replace an undefined word