How to say "persuasion" in Japanese

• 説得せっとくJLPT N1approx.Common
  noun, suru verb, transitive verbPersuasion in its basic sense: the act of convincing someone through talk and argument to do, believe, or accept something, as when winning over a reluctant colleague or client.
  私は彼女かのじょに気楽きらくにするようにと説得せっとくした。↗

  I persuaded her to make herself comfortable.
• 理詰めりづめCommon
  no-adjectivePersuasion by logic: making a case through step-by-step reasoning rather than emotional appeal. It names the logical approach itself, fitting 'persuasion' when the emphasis is on a tightly reasoned argument.
• 勧誘かんゆうJLPT N1approx.Common
  noun, suru verb, transitive verbSeldom the word for persuasion proper: it really means solicitation or canvassing, urging someone to join, buy, or sign up. Think of a sales or membership pitch rather than winning an argument.
  顧客こきゃくに対たいする勧誘かんゆうの電話でんわが、テレマーケティング部ぶの主要しゅよう業務ぎょうむである。↗

  Cold calls are the primary function of the telemarketing department.

For persuasion as convincing someone through argument, use 説得; 「理詰め」 adds the nuance of persuading by step-by-step logic; 勧誘 is really solicitation or recruitment, so it suits only the 'talking someone into joining or buying' sense.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 説得せっとくpersuasion
• 理詰めりづめreasoning
• 勧誘かんゆうinvitation
• 説伏せっぷくpersuasion
• 説諭せつゆpersuasion
• 勧説かんぜいurging
• しょうようadvice