Sindarin 

rachas

noun. danger

Sindarin Group: Eldamo - neologism/reconstructions. Published by

rach

noun. danger

Sindarin Group: Eldamo - neologism/reconstructions. Published by

Quenya 

raxë

danger

#raxë noun "danger" (pl. ablative raxellor, VT44:9); Tolkien also considered the form #raxalë (pl. ablative raxalellor) (ibid.)