"Hadst pegged" is a phrase that means to have a strong belief or conviction about something or someone. Synonyms for this phrase include "had a hunch," "felt sure," "had a strong intuition," "had an inkling," and "had a feeling." Other synonyms for "hadst pegged" include "had a gut feeling," "had a premonition," "had a foreboding," and "had a suspicion." All of these phrases indicate that the speaker has a strong sense that something is true and is confident in their belief. Whether it is based on past experiences or intuition, these synonyms for "hadst pegged" convey a sense of certainty.