Total

to·tal  [toht-l]  adjective, noun, verb, -taled, -tal·ing or ( especially British ) -talled, -tal·ling.
adjective
1. constituting or comprising the whole; entire; whole: the total expenditure.
2. of or pertaining to the whole of something: the total effect of a play.
3. complete in extent or degree; absolute; unqualified; utter: a total failure.
4. involving all aspects, elements, participants, resources, etc.;unqualified; all-out: total war.

I know this is going to seem random, but when I think of the word total, the first thing that pops into my head is...

It was a total eclipse of the heart!

Are you familiar with this 1983 classic by Bonnie Tyler? It came out the year I was born so maybe my mom played it a lot while I was a wee little tyke, because I've always loved this song.  Here it is in case you can't remember.

Tomorrow's letter is U (Thank God, we're almost finished!) and the word I chose randomly has 7 letters and starts with UN.  Any guesses?