Write out is a phrasal verb that means to put something into written form or to copy something in writing. Some synonyms for write out are transcribe, copy, record, jot down, note, and document. Transcribe means to convert speech into written or printed form. Copy means to reproduce something exactly. Record means to put something in writing for future reference. Jot down means to make a brief note of something. Note means to briefly write down something for reference. Document means to provide written evidence or proof of something. Depending on the context, some of these synonyms may be more appropriate than others.