漸く
ようやく · youyaku · JLPT N2 · adverb
at last
漸 = gradually + 来 (come): it finally came to you, after a slow wait, so 'at last'
The kanji 漸 means gradually or little by little. Adding に makes 漸く an adverb for something that arrived after a long, slow wait. Sounds like 'yo-yo kaku', so think 'yo-yo' slowly going down, then finally stopping.