testiest

At peak grumpiness

Testiest is the superlative form of testy, meaning most easily irritated or quick to take offense.

Someone at their testiest is at peak irritability: He's always testiest before his morning coffee.

The word suggests a short fuse rather than deep anger—snappish impatience more than genuine rage.

irritable

cranky

Ill-tempered and peevish

irascible · snappish · tetchy · grouchy · cross · cantankerous · crotchety · fractious · querulous · choleric

grumpy

cranky

Ill-tempered and peevish

sullen · glum · dour · surly · churlish · moody · brooding · gruff · sulky · ill-humored

combative

quarrelsome

Inclined to dispute

argumentative · confrontational · belligerent · antagonistic · disputatious · feisty · scrappy · bellicose · aggressive · hostile

sensitive

touchy

Easily upset or offended

oversensitive · hypersensitive · temperamental · volatile · mercurial · reactive · huffy

Opposites
temperament/patience

testiestcalmest

Superlative of tranquil

coolest

agreeableness/demeanor

testiestcheeriest

Most lighthearted

sweetest · sunniest · friendliest · kindest · happiest

Family

testier

Familiarity
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Profile
Used worldwide · Timeless · Abstract · Negative · Everyday, not technical · Rated G