tinderbox

noun

tin·​der·​box ˈtin-dər-ˌbäks 

1

a

: a metal box for holding tinder and usually a flint and steel for striking a spark

b

: a highly inflammable object or place

2

: a potentially explosive place or situation

Synonyms of tinderbox

• volcano

Examples of tinderbox in a Sentence

That old house is really a tinderbox.

officials sought to calm the situation, which had grown into a tinderbox

Recent Examples on the Web

As always with nuclear technology, worries about security, weapons proliferation and political complications in a tinderbox region have been central concerns. — Yousef Saba, USA Today, 22 July 2026

That was exacerbated by the extreme heat this year in France and Spain, which in many cases turned scrub grassland into a tinderbox. — Simon Constable, FOXNews.com, 19 July 2026

Without a slow-melting blanket of snow to keep the soil and forests moist, alpine vegetation is drying into a tinderbox earlier than normal and ramping up the fire risk. — Jasmine Garland, The Conversation, 7 July 2026

During the Biden administration, the border emerged as a tinderbox, with thousands of people seeking to cross into the country each day. — Rebecca Santana, Los Angeles Times, 2 July 2026

Word History

First Known Use

1530, in the meaning defined at sense 1a

Rhymes for tinderbox

• aftershocks
• chatterbox
• chickenpox
• equinox
• firebox
• goldilocks
• hollyhocks
• interlocks
• orthodox
• paradox
• tomahawks
• balks

Kids Definition

tinderbox

noun

tin·​der·​box -ˌbäks 

1

: a metal box for holding tinder and usually a flint and steel for striking a spark

2

: something that can easily catch fire