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.
彼は新しいプログラミング言語を比較的速く修得します。
He learns new programming codes relatively quickly.