Similar to infector
- infectus – corrupted, darkened, discolored, incomplete, not done, unfinished, unworked
- infectum – corrupt, dye, imbue, stain, taint, to poison, to tinge
- inceptor – beginner
- inventor – contriver, discoverer, inventor
- intentor – informant
- interpretor – to explain
- insidiator – one who lies in wait