When it comes to forming a true notion, there are various synonyms that can be used to express the same idea. These include phrases such as gaining an accurate understanding, developing an insightful comprehension, acquiring a precise perception, obtaining a correct impression, and creating an authentic conception. Other synonyms for the phrase form a true notion include establishing a factual acknowledgement, constructing a genuine realization, forging a legitimate cognition, and fashioning an exact apprehension. The important thing is to choose a phrase that accurately represents the act of comprehending or perceiving something accurately, without any trace of falsehood or misconception.