What is the synonym of cranky?

There are many synonyms for "cranky," depending on the specific nuance you want to convey. Here are a few options:

General irritability:

* Grumpy

* Irritable

* Cross

* Bad-tempered

* Fretful

* Peevish

* Sullen

More negative or unpleasant:

* Cantankerous

* Curmudgeonly

* Grouchy

* Irascible

* Testy

* Surly

More whimsical or humorous:

* Quirky

* Eccentric

* Fussy

The best synonym for "cranky" will depend on the specific context. For example, if you are describing someone who is easily annoyed, "irritable" might be a good choice. If you are describing someone who is old and grumpy, "curmudgeonly" might be more appropriate.