Comparative form of tetchy: more tetchy(adjective)
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Use "tetchier" in a sentence
"Harry himself is tetchier than ever, despite the veritable avalanche of female attention suddenly coming his way."
"The press would be tetchier and scream about "Red Ed"."
"While the Ides of July have passed over us and made everyone tetchier than normal, please try to constrain yourselves to insults that you can support through argument."