'em'—denotes propensity, inclination, disposition:

timi = to fear, tim'em'a = timorous.
amo = love, am'em'a = lovable.

'er'—denotes one of many objects of the same kind, the smallest fragment:

sablo = sand, sabl'er'o = a grain of sand.
mono = money, mon'er'o = a coin.

'estr'—denotes a chief, a leader, a ruler, the head of:

imperio = an empire, imperi'estr'o = an emperor.
ŝipo = a ship, ŝip'estr'o = captain (of a ship).

'et'—denotes diminution of degree:

ridi = to laugh, rid'et'i = to smile.
monto = a mountain, mont'et'o = a hill.

'id'—denotes the young of, offspring, descendant:

kato = a cat, kat'id'o = a kitten.
Izraelo = Israel, Izrael'id'o = an Israelite.

'ig'—denotes causing to be in a certain state or condition:

morti = to die, mort'ig'i = to kill (to cause to die).
pura = clean, pur'ig'i = to clean (to make clean).