underread

From under- +‎ read.

underread (third-person singular simple present underreads, present participle underreading, simple past and past participle underread)

1. (transitive) To read below what is normal, usual, or expected.
2. (transitive) To read insufficiently or with less competency, alertness, ability, etc.
3. (transitive) To read to a lesser degree.

• overread