忍ばせる

• Reading: しのばせる
• Romaji: shinobaseru
• Kanji breakdown: 忍 (nin/shinobu) — to endure, to conceal, to sneak
• Pronunciation: /ɕi.no.ba.se.ɾɯ/

Meaning

To conceal; to hide; to slip something somewhere secretly; to embed discreetly.

A Group 2 (ichidan) causative verb derived from 忍ぶ (to endure, to conceal). It describes the act of placing or hiding something out of sight, or subtly embedding something — an emotion, a hint — in a manner not immediately visible. Unlike 隠す (simply to hide), 忍ばせる suggests finesse and deliberateness: slipping something in without detection.

Examples

1. 彼はコートの内ポケットにナイフを忍ばせていた。 He had a knife concealed in the inner pocket of his coat.
2. 手紙の文面にそっと感謝の気持ちを忍ばせた。 He quietly slipped a note of gratitude into the body of his letter.
3. 諜報員は伝言を書いた紙を花束の中に忍ばせた。 The intelligence operative hid a message written on paper inside a bouquet of flowers.

Usage Guide

Context: espionage, concealment, literary, emotional subtlety

Tone: subtle

Origin & History

Causative form of 忍ぶ (to bear, to conceal, from 忍 — depicting enduring hardship, combining 心 heart under 刃 blade). The causative suffix せる means to cause something to be concealed. The verb has long been associated with stealth and subtlety in classical literature.

Cultural Context

Era: Classical–Modern

Generation: Adults

Social background: General