just thinking

I wonder if there is any language in which the word for "tomorrow" does not derive from a word meaning "morning". (And if so, what the word for "tomorrow" in that language does derive from.)

I just tried to find out about kesho / asubuhi in Swahili, but was only partly successful. Asubuhi (morning) is of Arabic origin (morning in Arabic - Sabah or something similar?), while kesho seems to be of Bantu origin. So the two words are definetely not derived from one another. However, I don't know if there is a word similar to kesho (in other Bantu languages) meaning morning, and Swahili, being a mixed language, has simply not taken over that meaning but instead imported a different word from Arabic.

What about Arabic itself, though? Tomorrow is "bukra", morning is something like "sabah" - don't seem to be related.

What about Arabic itself, though? Tomorrow is "bukra", morning is something like "sabah" - don't seem to be related.

They're not related, but the basic meaning of the root BKR is early, be early. bikr means first-born, virginal, bakr (as in the name of the caliph Abu Bakr), means young camel, bakuura are first fruits. And in fact bukra can mean either tomorrow or early morning. (And as baby giraffe has noted, boker is the standard Hebrew for morning.)

#23 -- Might Russian zavtra not be related to Polish jutro, Czech zitra? (see tonieja above).

#30 -- Kesho seems to derive from a verb kesha meaning to keep watch, stay awake at night. Unless it's the other way around. In any case it seems to qualify unless the root goes back further to a word meaning morning.

bkr root is also Hebrew for BOKER!
*feels intelligent.

#23 I think Cz Zitra is more likely cognate with Russian Jutro, as Cz i <-> Ru u in many words (another example, Ru Yug, south <-> Cz Jih). Not sure where the Z comes from (its definitely z, not zh).

Back to Slavonic/Slavic languages:

In Slovenian, "jutro" is morning and "jutri" is tomorrow.
But tomorrow morning is "jutri zjutraj".
I believe this is less strange than "jutri jutri".

that's a great pic Andrew, lovely family btw.
I admire your capacity to learn so different a language from you own's.

In Latin American Spanish, "tomorrow" and "the day after tomorrow" and "the day after that" and "never, actually" are all the same word, "mañana" ... heheh.

It looks like morning and tomorrow are co-related in Slavic languages, although taking different meanings thus constituting 'false friends' (eg. Polish "rano" means morning, while Russian "рано" (rano) means early).

#31
"Might Russian zavtra not be related to Polish jutro, Czech zitra?"

It definitely looks like it could be. A Czech speaker might like to correct me, but to me "zitra" sounds like "z itra", meaning "from morning". In similar way, in the morning, in Polish, can be either "rano" or "z rana". (z = from, of).
Furthermore, there is a word "jutrznia" (slightly oldfashioned), or diminutive "jutrzenka", meaning morning light. It clearly looks like it's derived from "jutro" meaning tomorrow, and not from "rano" (morning).

#34 and 35
"In Slovenian, "jutro" is morning"
Similar in Russian "утро" (utro), but in Polish "jutro" means tomorrow.

About the root BKR: I'm very excited to hear what you explain, VinnyD - just studying Arabic now and any connection like that is always like a lightbulb going on in a dark room - suddenly you see all these conjugations around you and stop bumping into them. More so because it's the same root used for many of these same words in Hebrew (not "boker", Itsasmallworld, sorry I'm being a pain today but I also only just found that out courtesy of Vinny; boker is spelt with a khaf and this root has a kuf):
a young camel (bekher),
first-born (bkhor),
first fruits of the season (and hence the Jewish Pentecost: bikurim)
giving first priority (levaker),
and probably a whole lot of other things I can't think of right now.