Honest
Honestly
adverb, noun, な adjective
You have correct and fix. When you're always fixing things to make them correct (for example, someone's lies!) you are a very honest person.
しょうじき
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
川田さんは、とても正直な人です。
Kawata is a very honest person.
かれの正直なところがすきなんです。
I like his honesty.
僕は水中で息をしている火星からきた王子だし、他の人の模範となる必要があるので、いつも正直でいようと心がけています。
I try to be honest all the time because I’m an underwater-breathing Martian prince and I need to set an example for people.