pattern - What is a Tellygraph Word™?

_{This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles.}

If a word conforms to a special rule, I call it a Tellygraph Word™.

Can you tell me how to get a word that conforms to the rule?

And, if you want to analyze, here is a CSV version:

Tellygraph Words™,Not Tellygraph Words™
ANVIL,FORGE
ANXIETY,STRESS
FILTHY,DIRTY
HAMLET,HOVEL
INFLAME,IGNITE
INHALE,BREATHE
KNIFE,BLADE
NATIVE,LOCAL

NEAT,CLEAN
TWINKLE,SHINE
VITAL,CRITICAL
VIXEN,HARLOT
WEALTHY,WELL-OFF
WHINE,FUSS

Answer

A Tellygraph Word™ is, in essence,

a word containing no letters that are drawn using a curved line (BCDGJOPQRSU).

It's called a Tellygraph Word™ because

if you look at the top edge or the bottom edge of the word, the letters can be interpreted as Morse Code.

For example,

The word ANVIL The top edge of the word is $\centerdot\centerdot\centerdot\centerdot\centerdot - \centerdot$. The bottom edge is $\centerdot\centerdot\centerdot\centerdot\centerdot - -$ (The first five dots on the top are from the top of the A, the tops of the two arms of the N, and the tops of the two arms of the V.)