add

short for "addition"

that's why it has an extra d

eh

a slang interrogatory

"what did you do that for, eh?"

acts

multiple of act

also, a book in the bible

ad

short for "advertizement"

aid

to assist or help, or that which is given to assist

aide

a person who assists

(spelling has both a person - i - and another face looking on -- the e)

ade

a kind of fruit drink

lemonade

adze

a kind of ax-like tool

ads

multiple advertisements

adds

multiple things that are summed up

3 plus 4 adds up to 7

affect

to change, a verb

I affect other people.

change (affect)           a

comes before

result (effect)           e

effect

a result

I will see the bernoulli effect, if I created this right.

airy

breezy

My kilt makes my legs feel airy.

aero

pertaining to an aircraft

Greek word for "air"

arrow

what is shot from a bow

has the word "row" in it, suggesting a straight shot from the bow

are

another form of "am" and also 1/100th of a hectare

air

the stuff we breathe

ale

beer

ail

to be sick, to have ailments or maladies