Final answer:
The antonym for corroborate is contradict, deny, refute, or dispute. In the given words, letter 'g' and combination of 'g' and 'e' produce the [g] sound.
Step-by-step explanation:
The antonym for corroborate, which means to support or strengthen a statement or theory, would be contradict, deny, refute, or dispute. These terms are opposite in meaning to the listed ones, including affirm, approve, assure, back, certify, confirm, endorse, sanction, and support.
Reviewing the letters spelling [g] in the given words: In 'disagreement' and 'gasoline' the letter g is underlined. In 'angled', 'designate', 'argued', and 'angrily', it’s the combination of g and e that phonetically produce [g] sound.
Learn more about Antonym and Pronunciation