a seed / a pit or stone in a fruit / a gamete (reproductive cell such as a spermatozoan or egg) / a lineage, bloodline / an origin, cause / the materials or ingredients from which something is made

not ... at all

even if ...,...cannot

be excited, be stimulated, be agitated, be aroused

excitement, stimulation, agitation, arousal

very, exceedingly, awfully / (before a negative form) not at all, at all, by no means

germinate

germination

Sorry to have kept you waiting; thank you for waiting

to wait (for)