Words that start with 't' and contain 'gh'

What is the biggest word you can derive with this list?
The biggest word is 17 letters long, which is 'thoroughgoingness'.

Is there an example of a word from this page of word that starts with 't' and includes 'gh' that could be thought of as unique?
'Trough' is definitely the most strange word from our list of words that start with 't' and include 'gh'. 'Trough''s definition is "1. A long, hollow vessel, generally for holding water or other liquid, especially one formed by excavating a log longitudinally on one side; a long tray; also, a wooden channel for conveying water, as to a mill wheel. 2. Any channel, receptacle, or depression, of a long and narrow shape;...", according to the English dictionary.

What is the max number of words one can make using words that start with 't' and include 'gh'?
From this page of words starting with 't' that contain 'gh', there are 188 entries that are available.

Is there a word on this page that stands out as the most popular?
The most well-known word for your search is 'through'.

What's the highest number of points you could get in Scrabble from this list of words that start with 't' and include 'gh'?
With the amount of words to choose from, we'd recommend picking 'thoughty' scoring 18 points.