Pa'in'less. That means no pain. It also has'in' in it.
The word you may be looking for is 'shield'.
It could be any of the mean words but with "i'm sorry i'm gonna say this mean word but..."
Endo
That is 'nasal'
Pick a word, any word really. If its hurting, pick again. Otherwise you're good to go.
Introspection
Introspection
Autologous
Intracontinental is a word that means within a continent. Transcontinental means crossing or spanning a continent.
The gerund 'hurting' can function as a concrete or an abstract noun.The noun 'hurting' is a concrete noun as a word for the endurance of physical pain.The noun 'hurting' is an abstract noun as a word for the endurance of emotional or mental pain.
It is bar.
The prefix "intro-" means in, into, inward or within. There might be others.