Wordsmith Wednesday

It's been too long since I've posted a plain and simple derivative post...so here goes.

Root:

frangere (L) - to break (4th PP: fractus)

Derivatives:

fraction (n) - a piece that is broken off from the whole

fractious (adj) - prone to break the peace; unruly; quarrelsome (fractiousness)

fragment (n) -  a broken piece (fragmentation, fragmented, fragmentize, fragmentizer)

infract (v) - to break by violating (infraction, infractor)

refract (v) - to break repeatedly (refractive, refractory, refraction, refractivity)

fragile (adj) - easily broken (fragility)

infringe (v) - to break a barrier; to trespass (infringement)

Can you add to this list?