Jeb Bush was clearly on attack mode this week as he repeatedly called his Republican rival, Donald Trump, a jerk.

Apart from the harsh way of describing his opponent, he also called out Trump on his ideologies and accused the mogul-turned-politician of "hijacking the conservative cause."

The former governor also took shots against his Democratic rivals, but saved the most disparaging attacks for Trump. In addition, he also mentioned that if Trump somehow managed to "insult his way" into the presidency, he will bring some sort of "global depression."

He said that his rival's plan to put a 45 percent tariff on Chinese exports will cause a trade imbalance with the country. He went on and called the move as "really idiotic." To capitalize on his point, Jeb pointed out that if that were to happen, it would cause a big negative impact in America, particularly the state of Iowa, which has a trading relationship with China.

Jeb also said that Trump does not have any idea what he's talking about, and reiterated that his policies will only hurt Iowa agriculture. He said, "What does a country do when it gets thrown a 45 percent tariff? It retaliates. And who would it retaliate with? Agriculture, and the equipment and the technology that this great state has developed and has been sold to China. All of that is foolhardy."

Similarly, CNN noted that he also took issue regarding Trump's comments about women, Muslims, Latinos and the 2008 GOP Presidential Candidate John McCain.

Jeb said, "He disparages POWs like John McCain, saying he's not a hero because he got caught." Jeb also asked what kind of a president make such divisive remarks and said that he will not apologize for calling Trump a "jerk."

As for Trump's supposed "conservative ideals," Bush lamented that his opponent is not a conservative, while also answering questions regarding government responsiveness, The Washington Examiner has learned.

Jeb answered that the government should be much more efficient, compact, nimble and respectful of the people they are serving. He went on to proclaim his love for conservative principles and said that he would love to win the conservative battle.

As for Trump, he repeated that he is not fond of his rival running as Republican because he is not a true conservative.

But in a report by USA Today, it was noted that there are also doubts regarding Jeb's ideals. He then countered that he thinks it's ridiculous that his critics doubted his affiliation and made it clear that he was "consistently a conservative."