penultimate
: peninsular
: penumbra
The above three words start
with the prefix pen-. The prefix "pen-" means
almost.
Now
penultimate :
almost ultimate.
peninsular
: almost insular (insular means "of or like an island").
penumbra :
almost umbra ( umbra means shade or shadow
).
[
In fact the words umbra and penumbra are eclipse
words.. Moreover the word 'umbrella' has the origin from
'umbra'. ]