Stepfather
noun
A father you've inherited isn't your original father, he's your stepfather.
けいふ, ままちち
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. This word can also be read as ままちち, because 継 can take the special reading まま when it's used as the prefix "step," as in "stepfather."
小さい頃、継父にいつもおんぶをしてもらっていました。
My stepfather used to give me piggyback rides all the time when I was little.