Stepmother is one word. So, you do not have to use a hyphen. Similarly: stepfather, stepsister, etc.
You say "A hyphen" because the sound of the letter "H" at the beginning of the word "hyphen" is pronounced, making it a consonant sound.
No, it does not have a hyphen.
It Is A Special Hyphen
A colon is this : and a hyphen is this -
multimedia - NO hyphen
hyphen
No there's not a hyphen.
It does not need to have a hyphen! :)
Non-breaking hyphen
does time-line have a hyphen
No, deworming is not spelled with a hyphen.