Small, Stall
an on in are all 2 letter words ending in N.
Total
taxi lexi is also a 4 letter word which means protector of all mankind.
autau
"Short" is a five-letter word that becomes shorter when you add two letters.
maglev moshav improv isogriv That's all.
all, awl, eel, gal, pal, ill
Dairy, fairy and hairy all fit the description.
One such word is essential.
"Gases" is a five-letter word that starts with "g" and relates to steam, air, and helium, all of which are forms of gases.
SWIMS
Quick, hasty, and rapid all work.