cinching
cinch-ing
verb
Informally, making something absolutely certain or securing a victory or deal.
"They are cinching the deal."
verb
Fastening or tightening something securely, often around a waist or saddle.
"He was cinching his belt tighter."
Thesaurus
Synonyms: cinch, girth, pushover, picnic, walkover, snap, duck soup, breeze, child's play, piece of cake