IPA: /ˈmɔɪsən/
KK: /ˈmɔɪsən/
To make something slightly wet or damp.
She decided to moisten the soil before planting the seeds.
Past: moistened
Past Participle: moistened
Moisten → It is formed from "moist" (from Old French *moiste*, meaning slightly wet) and "-en" (a suffix used to form verbs). The word "moisten" means to make something slightly wet or damp.
Think of something being made 'slightly wet' — 'moist' refers to that condition, and the '-en' means to make it so.