imbarn imbibe imboil imbound imbrue imbrute imbue imburse immanacle immense immerge immerse immigrate immingle immit immix immure impact impale imparadise impassioned impawn impeach impearl impel impen imperil impinge implant implead import impose impound impregnate impress imprint imprison inarch incase inclasp inclip incloud include incrassate increase incur indart indent indict indite indoctrinate indrench induce induct ineye infer infest inflix inflame inflate inflect inflict infringe infuscate infuse ingrane ingest inhabit inhale inhere inhold inhume initiate inject inlapidate inlay inlet inoculate inosculate inquire inrail inscribe insculp inseam insert inset inshell inship insinew insphere inspire inspirit install instate insteep instil instop insure inter intertwine intort intreasure intrench intrude intrust inumbrate inure inurn invade inveigh invert invest invigorate invite invocate invoice invoke inwall inweave _IN and UN._ _In_, as a prefix, also marks _negation_: it is probable that it came from the Romans. _Un_, as a prefix, is synonymous with _in_: it is of Saxon origin, and generally joined to words from a northern source; while _in_ is oftener applied to those of Latin derivation. _ISE and IZE._ The variation in the terminations _ise_ and _ize_ is due to the different derivations of words,—_ize_ characterizing words from the Greek and Latin, and _ise_ from the French. The rule, however, is not inflexible. The following words are commonly spelled with the _s_. advertise advise affranchise aggrandise amortise catechise chastise circumcise comprise compromise criticise demise despise devise disfranchise disguise divertise emprise enfranchise enterprise exercise exorcise galliardise manumise merchandise misprise (mistake) premise recognise reprise (take again) supervise surmise surprise _OR and OUR._ The ending _our_ was in general use until the appearance of Webster’s Dictionary, in which the _u_ was dropped in words terminating with _our_. This innovation has steadily gained ground. We do not approve of partial tinkerings with English orthography; and, until a general convention of British and American scholars settle the method of spelling English words, we shall adhere to the established usage. We append a list of words terminating in _our_.