þ(thorn) & ð (eth)
used interchangeably, unvoiced ‘th’ in ME thinketh–þing ‘thing’, broðor ‘brother’
f, s, þ, ð (between vowels or voiced sounds)
voiced. f–>v, s–>z, etc: ċeosan ‘to choose’, feðer ‘feather
double consonants
lengthened and pronounced
ċ
used to distinguish from c ‘k’; like ‘ch’ in chin