Tasnif Style Guide — Page 47
CHAPTER 5: SPELLING AND HYPHENATION BRITISH US -ence SPELLINGS -ense defence defense -re -er -C -k -1 -11 -ou -O -ogue -og -our -or -S -Z offence offense pretence / pretense licence license (noun and verb) calibre caliber centre/center manoeuvre / maneuver mitre / miter sceptre / scepter sceptic / skeptic mollusc/mollusk jewellery/jewelry appal/ appall fulfil / fulfill distil/ distill enrol / enroll mould mold moult / molt smoulder smolder analogue / analog catalogue/catalog colour / color honour/honor labour / labor neighbour neighbor harbour/harbor tumour tumor cosy / cozy analyse analyze 47