also: そろばんづく
He is mercenary, prioritizing money over friendship.
You can't find true happiness with a calculative mindset.
金に汚い means 'money-grubbing' or 'stingy', focusing on greed for money itself, whereas そろばんずく emphasizes a cold, calculating attitude toward profit and loss.
Alternate kana spelling with rendaku voicing; less common than そろばんずく.
Kanji spelling; rarely used in modern writing.
Kanji spelling with 尽く; rarely used.
Kanji spelling with rendaku; rarely used.
Irregular okurigana kanji spelling; rarely used.
Compound of 算盤 (soroban, 'abacus') + 尽く (zuku, suffix meaning 'entirely' or 'devoted to'). Literally 'abacus-minded', implying a person who is always calculating gains and losses.