wag
Word family
- waggleverbC1
- waggishadjectiveC2
- waggernounC2
Synonym discussion
Sense: verb/1
All five describe back-and-forth motion, but the body part decides which word fits. 'Wag' is reserved for a tail (animals), a finger (a person scolding or warning), or a head (a small side-to-side motion meaning 'no' or 'I'm not sure'). 'Wave' covers larger arm and hand motions, often as a greeting: you wave at a friend across the street, you do not wag at them. 'Shake' is the most general — you can shake a hand, shake your head, shake a bottle — and it suggests up-and-down motion as often as side-to-side. 'Swish' is reserved for longer, smoother, single sweeps of a long tail or a skirt: a cow swishes its tail, but a small terrier wags its tail. 'Waggle' is informal and playful, with smaller and quicker motion than wag: you waggle your eyebrows at a joke, you wag your finger to scold.
Common collocations
Etymology
Goes back to Middle English 'waggen', meaning to move back and forth, probably from an Old Norse root meaning to sway or rock. The 'joker' noun sense is a separate development — it is a shortening of the older slang word 'waghalter', literally 'one who is heading for the gallows' (i.e. a rascal). The modern 'WAG' (wife / girlfriend of a sportsman) is unrelated in origin: it was coined in 21st-century British tabloids from the initials of 'Wives And Girlfriends'.
First known use
13th century
13th century, in the meaning defined at intransitive sense 1 Noun (1)