stammering, stuttering / a stutterer

cliff

cliff

(childish) mama, mamma, a childish form of mother, one's female parent / proprietress of a drinking establishment etc.

in accordance with someone's wants

green hand, novice

science / a field of study

a tetrapod (a concrete structure used in breakwaters to absorb and reduce the energy of waves, such as along a shoreline)

the Sheep, the eighth of the twelve Earthly Branches

un-; in- (not yet)