noun, noun or participle which takes 'suru', intransitive verb
attempt; try to reach
Literary and rare; used for striving to attain a goal or standard. Often appears in formal or classical contexts.
彼は高みを企及することを諦めなかった。
He never gave up trying to reach greater heights.
企及しがたい理想で
It is an ideal that is hard to attain, but still worth pursuing.