to lower oneself to the same level as someone else; to share the same shallow level of knowledge or character as another person, used in the negative to show one is more reasonable or mature than an opponent

to be inexperienced or unsophisticated; to have seen little of the world

to be knowledgeable and experienced; to be farsighted or have an analytical mind

Lacking knowledge or experience; unlearned and provincial

To broaden one's horizons; to increase one's knowledge and experience.