moist /mɔɪst/ BrE AmE adjective
[ Date: 1300-1400 ; Language: Old French ; Origin: moiste , from Latin mucidus 'wet and slippery' , from mucus ; ⇨ ↑ mucus ]
slightly wet, especially in a way that is pleasant or suitable:
Make sure the soil is moist before planting the seeds.
a rich, moist chocolate cake
warm moist air
Her eyes were moist (=she was almost crying) .
—moistness noun [uncountable]