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

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

nonexistent / not possessed or unavailable for one to use / not yet come, (expected but) not arrived / first in occurrence

-less, without ..., not having or not being that thing

nothing / (colloquial) bad, unacceptable