Comparatively
Relatively
adverb
比較 is a comparison. Add 的 to it and you have comparatively.
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. Will help if you know the word 比較.
この店は、銀座にしては比較的安いんだよ。
This restaurant is relatively cheap given it's in Ginza.
この本は、児童文学にしては比較的難しい言葉を使っているね。
This book uses comparatively difficult words despite being juvenile literature.
実は日本って、G７の中では税金が比較的安い方なんです。
As a matter of fact, Japan is one of the G7 countries with relatively low taxes.