A transliteration of the English female given name Serenity

serenity; (a state of peace and tranquility.)

to relax, calm down / to settle

mind, heart, spirit, soul; thoughts, ideas / attention, mind, interest / heart, feelings, emotion, emotional state / wholeheartedness, sincerity, true heart

(chiefly women's speech) first person singular pronoun: I, me

a lake (body of water)

lake

private; mine

(polite) first-person singular pronoun: I, me

a personal or private matter / (by extension) selfishness