• Basic forms
• 狭める — narrow; tighten / base form
• 狭めます — narrows; tightens / masu form
• 狭めた — narrowed; tightened / ta form
• 狭めて — narrowing … / te form
• 狭めない — do not narrow / negative
• 狭めれば — if (one) narrows / conditional
• Common expressions
• 範囲を狭める — narrow the scope
• 距離を狭める — close the distance
• 選択肢を狭める — limit options
• More
• 狭めたい — want to narrow / 〜たい form
• 狭めている — is narrowing / state

狭める（せばめる） is an ichidan transitive verb. It focuses on actively making something narrower or more limited.

• Basic forms
• 狭まる — become narrow; tighten / base form
• 狭まります — becomes narrow; tightens / masu form
• 狭まった — became narrow; tightened / ta form
• 狭まって — becoming narrow … / te form
• 狭まらない — does not become narrow / negative
• 狭まれば — if (it) becomes narrow / conditional
• Common expressions
• 道が狭まる — the road narrows
• 可能性が狭まる — possibilities narrow
• 包囲網が狭まる — the encirclement tightens
• More
• 狭まっている — is narrowing; has tightened / state

狭まる（せばまる） is a godan intransitive verb. It describes a change of state where something becomes narrower naturally.