What are the opposite words for un-substantial?

Unsubstantial refers to something that is lacking in substance, reality, or importance. Some antonyms for unsubstantial include solid, substantial, genuine, authentic, legitimate, sound, and credible. Solid refers to something that has real physical substance or is strong and reliable. Substantial denotes something that is significant or substantial in size, weight, importance, or quantity. Genuine implies something that is authentic or true to itself. Authentic means something that is real or genuine, while legitimate implies something that is lawful or genuine. Sound suggests something that is based on truth or principles, while credible denotes something that is believable or convincing. Overall, these antonyms present a range of options to describe something that is not unsubstantial.

Antonym of the day

abandon, differ, disagree.