Definately a consonant.

Oh, and congratulations on becoming a moderater, Sir.

When I get time, I'll get myself caught up on all that's going on and try a few sentences.

Perhaps we can create a short story to practice the language. I think that is a long way off at this time however.

Once we get the basics down we can communicate with each other in the language.

I may not become real active for a while. When I have time I might.

I will at least try to keep my eye on what's going on, with the hope of helping out a little, sometime in the coming year.

If you are speaking another language to someone who doesn't at the same time speak English, you can't say "How do you say 'cold'"? Because that person wouldn't know the meaning of "cold". But, if you remember the word for hot, you could say "what is the opposite of hot?".
My point is, that maybe the idea of simplifying the language with adding an "opposite of" suffix may be unnecessary and therefore a bad idea.
I have a tendency, perhaps an irritating one, of "thinking out loud".

Another idea have a suffix for opposites? This would cut the number of words substantially. Hot & Cold. Young & Old. etc
I don't know if it's a good idea, but it could simplify things and make it easier to learn the language more quickly.

Or a prefix nonhot=cold nonold=young or unhot instead of nonhot etc etc
Then there would be halfhot for lukewarm. Maybe zerohot for cold? zero-old or little-old for young.

Has this been tried in any Conlangs before?

OK, I was primarily aiming at including a short list of 100 common words, so if that is a better list, we can use that one instead.
Eventually we can include 850 words:

https://en.wiktionary.org/wiki/Appendix:Basic_English_word_list

sorted alphabetically the same words:

https://simple.wikipedia.org/wiki/Wikipedia:Basic_English_alphabetical_wordlist

Is there also a better list than this? If so I would be interested in seeing it.

(edit: note that the first link sorts words by category and the first list of 100 words seem essential)

take
than
that
the
their
them
then
there
these
they
think
this
time
to
two
up
us
use
want
way
we
well
what
when
which
who
will
with
work
would
year
you
your

I
if
in
into
it
its
jelly
just
know
like
look
make
me
most
my
new
no
not
now
of
on
one
only
or
other
our
out
over
people
say
see
she
so
some

I adding jelly making 101 words. I am putting it in three posts rather than one, because of the length.

a
about
after
all
also
an
and
any
as
at
back
be
because
but
by
can
come
could
day
do
even
first
for
from
get
give
go
good
have
he
her
him
his
how

It seems that we are a multilingual group so far.
Languages spoken here, Terris, English, Spanish, French, German, Arabic & Japanese. Not bad.

Here are some critical words for our vocabulary:

https://en.wikipedia.org/wiki/Most_common_words_in_English

They need to be put into alphabetical order. If nobody else does this, I will make a point of putting them in order
when I get a chance, if you think that that would be useful.
Perhaps I could also come up with a few random words in Terris and someone could decide which English words
to equate them with. As an example the Terris word "sogo" means... ____?
edit: I propose "sogo" = "jelly".

Soon we will be able to make sentences. We have the word for "mother". To say "My mother is nice" we need three more words.
Certainly the verb "to be" is one of the most important verbs. "My" will be easy to create since we have the word for "I".
Maybe add a suffix to "ilor". "Ilorka"?

Perhaps we could use Q without the following U for all loan words beginning with the K sound (including C words that start with the K sound). Unless a loanword starts cu or ku in which case we could use the K.
So "Coal" would be "Qoal" and "King" would be "Qing" (just an example, since we could have Terris words for "coal" and "King").

To boldly split infinitives is a highly controversial grammatical question. I am not sure if it will be an issue, if Terris has infinitives that are one word.

yes(sa).. perfect

(edit: I am logging out. I have many things to do. I may return tonight or tomorrow. This is a nice place. Thanks for creating it.)

I would prefer either Spanish or English pronunciation for aeiou.
This would at least the vowels simple.
Spanish vowels have one sound. English letters aeio could be simplified to the names of those four letters.
u could be like the oo in "moon". Whatever you decide, one sound for each vowel, would be my preference.
As for consonants that is a little more complicated, although most of them would be similar to English, of course.

If you want to use "ilo" for "I", I suggest "ilor" for "we". (or something similar containing "ilor").

Ilo: sa (=I, Tom, say "yes")

Sa

"YES", but I can only say "yes" in English, until I know what the word for "yes" in Terris is. 

We could have irregular verbs. Like the verb "to be". But the fewer the better, many irregular verbs would be more verb forms to learn and it may be too tedious to learn them all. If there is a lot a vocabulary to learn, making the rest of the language as simple as possible could be a good goal. Many languages are difficult to learn. For example, learning a whole new alphabet. Confusing grammar and idioms. Many dialects, complicated verbs etc.
Word order is another question, red apple or apple red? Some languages the verb can go anywhere. In Japanese the verb comes at the end of the sentence. Anway, I like the idea of keeping the alphabet simple and not having letters have too many sounds; English spelling is something to avoid.

 Like some languages we could have two different verbs that English translates "to be". Also, some languages have two words for "that" as in that chair where you are vs that chair not near you.

I agree with no formal pronouns. I can call you Mr. Adam or Mr. Timmy if the needs arises. Although it wouldn't be the actual word Mr. So we will need a word for Mr and perhaps a word equivalent to Mam or MS. Whatever the feminine of MR or SIR would be. Some women don't like Mam because it implies an older woman and prefer Miss. One word for that would be enough. A word that implies the feminine of MR or SIR.

Does this language have a name yet? If not perhaps something simple, and something that means "planet earth", like Terran or a variation of the letters TRN, those letters in any order with whatever vowels you want to put before and after the second letter. Not important, but it would be nice to have some kind of name for the language.

Suggestions for key words, nouns and verbs?

Another idea for vocabulary, the word "word" and the sentence "How do you say (___) in (whatever the name of our language is)?
Like: "How do you say 'word' in XXX?" Or "What is the word for 'dog' in XXX?"

Thanks. It is a real equation with a solution, using a base that obviously is not decimal.