to know, be aware of / to learn, acquire, / to be acquainted with, to know (someone) / (colloquial, in the negative) to care in the least about, to be concerned with,

to say, to tell somebody / to call, to name, to give a name / to cry, to call, to make a noise (such as an animal)

whatchamacallit, X

Alternative spelling of 物知り: a person with broad knowledge, a knowledgeable person

stem or continuative form of 知る (shiru) [godan]

What? What did you say?

in other words; what I (you, etc.) mean is

to startle; to surprise; to astonish

past tense and perfective aspect of 言う (iu, yū) [godan]

nonetheless, although, be that as it may