One-word substitution (marital choice by vow): Identify the precise term for one who does not marry, especially by religious vow or obligation, abstaining from sexual relations. Context: Distinguish this from general bachelorhood or social withdrawal. Instruction: Choose the most accurate single-word substitute.

Given data

• Description: One who does not marry, especially on religious grounds.
• Need: term tied to vow/abstinence rather than mere unmarried status.

Concept / Approach
Celibate refers to a person who abstains from marriage and sexual relations, often for religious reasons. A bachelor is simply an unmarried man; a virgin refers to sexual inexperience without implying a vow; a recluse lives in seclusion.

Elimination
Celibate — abstains by vow/choice; correct. ✅Bachelor — unmarried, not necessarily abstinent or religious. ❌Virgin — sexual status, not a vowed state. ❌Recluse — socially withdrawn; unrelated to marriage vow. ❌

Example
‘‘Monastics may take a vow to remain celibate. ’’

Final Answer
Celibate