underestimate
definition
to assess something as less important or less capable than it is
example
Many people tend to underestimate the impact of small daily habits on long-term success.
synonyms
underrateundervaluemisjudge
word origin — Originates from the prefix 'under-' meaning 'beneath or less' and 'estimate' from Latin 'aestimare' meaning 'to value or appraise'.