welly/ˈwɛli/EtymologyClipping of Wellington + -y (diminutive suffix).nameWellington, New ZealandnounWellington boot.“Dad has great big welly boots. For squishing in the mud; Two great big black welly boots: Thud, thud, thud.”Force on a pedal or increase to any fuel or power for an engine or motor.Force or effort.“Come on! Put some welly into it!”advAlmost; nearly.“A person exceedingly hungry says, "I'm welly clem'd; I'm almost or well-nigh starved." It is the ordinary appeal of a beggar in the streets, when asking for food.”very.“The real thrill comes to the investigator when, convinced that he is no mere casual diner, the waiter grins broadly and says, "You don't worry. I get you something welly nice."”