When writing, it is important to have access to synonyms that can add variety and nuance to your work. The word "crankily" refers to being irritable or easily annoyed, and there are several alternatives that can be used to replace it. Some words that could be used as substitutes for "crankily" include "grumpily," "testily," "peevishly," "surlily," and "crotchetily." Each of these words carries a slightly different connotation, so selecting the appropriate synonym depends on the desired tone and context of the writing. Adding variety to your writing by incorporating synonyms can engage the reader and enhance the overall impact of your work.