Using the first two and last two letters of “Perplexus”, a list of
18 words of length 6 to 13 letters has been made, all of the
form: “pe...us” with the full word to be supplied.
Some lengths are used more than once. The problem is to
find the words using the clues below.

To make life easier, here is some help:

1) All of the lengths 6 to 13 are present at least once.
2) The list of clues given below is _sorted_ by answer
word length from 6 to 13, so you can at least be sure
the first answer is 6 letters long and the last is 13 letters long.
3) Finally, all of the answers of length nine or longer end in “ous”.

Clues:
Radium Weed euphorbia
Soldiers send on a suicide mission (likely "lost")
temporal bone
ship compass for relative bearings
Hermes’ hat
winged horse
(historical) list of ports and coastal landmarks
very dangerous (as a journey)
hanging loosely (e.g; said of breasts)
suffering extreme poverty
patriotism’s idiocy, as per Shaw
deceitful; untrustworthy
clearly expressed; lucid
troublesome; disease-harboring
having parts in groups of five
done through the skin, as in needle punctures
holding firmly to an opinion or course of action
having ready insight into understanding things