bear

a bear (large mammal of family Ursidae) / (slang) hairiness in general; (more specifically) a bear, an otter (a hairy man, especially one who is gay)

prefixed to other nouns for animals or plants to indicate large size or great strength, relative to other varieties

ignorance is bliss

complete denial of knowing (an incident in question)

(Classical Japanese, archaic, honorific) to know

God only knows

to make known

to have no way of knowing; to be completely ignorant of

to know through one's own experience