more
Antonyms to shallow include the terms unfathomable and fathomless.
Harmful - Harmless Careful - Careless
The suffix of "fearless" is -Less
" less "
-Less is the suffix.
The suffix for the word harmless is -less, which means without. hope that helps!
The suffix of "restless" is "-less."
Words that are suffix-less are called root words.
Heplful Helpless Useful Useless Careful Careless
Less
The suffix less means not having. For instance, motionless, flavorless, emotionless are all words that demonstrate that the suffix less means not having the root of the word.
Thoughtlessness has 2 suffixes-less & - ness.