Answer: tinder

AnswerCrossword Clue
TINDER

Fire-starting stuff

TINDER

Firewood

TINDER

It's highly flammable

TINDER
Kindling's kin
TINDER
Fire-start
TINDERFire starter
TINDERKindling
TINDERDry twigs for a fire
TINDERTouchwood.
TINDERInflammable material.
TINDERCompanion of flint and steel.
TINDERFlammable material.
TINDERFlint's companion.
TINDERSubstance akin to kindling.
TINDERContents of a risky box
TINDERCombustible material
TINDERKind of box
TINDERFlammable material
TINDERFlammable item
TINDERHighly flammable wood
TINDERFast starter
TINDERInflammatory stuff
TINDERTwigs, perhaps
TINDERCombustible substance
TINDERDry twigs, e.g.
TINDERIt goes up fast
TINDERPopular dating app