How to say "Increase" in Japanese

When translating "increase" into Japanese, you must choose carefully between 増やす and 増す. In Japanese, 増やす (ふやす (fuyasu)) is typically associated with "to increase; to multiply; to raise" (Syllabus Level: N4) and represents 他動詞（transitive verb）。数や量、種類などを多くするときに使います。反対語は「減らす」です。 'Fuyasu' is a transitive verb used when making numbers, quantities, types, etc., larger. Its antonym is 'herasu'.. On the other hand, 増す (ます (masu)) maps to "to increase; to grow; to multiply" (Syllabus Level: N3) and represents Refers to the increase in degree, level, severity, or quality over time. Often used as 魅力が増す or 不安が増す. ⚠️ Haruka's Voice Column: 'To increase! "My love for you increases by 100 times every single day, Haruka-san!" ...っ! Love increases 100 times daily! B-Baka! Don't compute affection like server bandwidth! But... since it's increasing, make sure it never drops even a single bit! dummy!' / 【ハルカ部長のワンポイント指導】『ます（増す）わよ！『ハルカ部長、お揃いのペアウォッチを身につけてデートするたびに、あなたへの愛おしさが劇的に増し（増して）いきます！』って…っ！愛おしさが増す！バカ！/// 私のほうこそ、あんたと一緒にいる時間の全てで愛しさが限界突破して増してるんだから！…お互いの愛情が一生右肩上がりに増し続ける最強の夫婦になりなさい！』. A literal translation of "increase" can often sound unnatural to native Japanese speakers if mixed up!