Achieve.
Good ones are: Intelligent Imaginative Insightful Inventive Inclusive
Only ones I can think of is a Dodge, Desoto or a Delorean.
Haddock, herring, halibut and hake are four common ones.
'T' in all the ones I've seen so far
You don't mention how many letters in the answer or whether you have any letter clues already filled in - that makes it very difficult to answer your question.To gather ones thoughts or efforts is to become calm or organised or mentally composed.
Brachiosaurus, Brontosaurus, ... these are the only ones i can think of right now ")
Muscles. :D
Liberal, lonely, lean, lanky, loathsome, likeable.
I found one which is livestock. The only other ones which I know which starts with the letter L is lettuce, llama, and lamb.
There are no major cities in Spain that begin with the letter "R". There are some smaller ones, like Requena, Valencia and Retuerta del Bullaque, Castilla-La-Mancha.
As far as I can remember the only ones I know are, Adagio from No.2 and Allegro No.5 but if they are just movements I can't remember.
Xavier (Pronounce Zavier), Xeno (Pronounce Zeno) and Xander (Pronounce Zander). There would be more but these are the only ones at the top of my head.