zero

[1]	zero in on , focus on , pinpoint , fix on , home in on , concentrate on , bring to bear on
[2]	zero in

[1]	nothing , nil , null , nil , nix , nothing , nought/naught , nada , null , aught , cipher , aught , Cricket duck , cipher , (Colloq) nix , cypher , goose egg , (US) goose-egg , nada , naught , zilch , niente , (Slang) (Brit) (sweet) Fanny Adams/F.A , zip , zippo , bugger-all , (US) zilch
[2]	(rock) bottom , 0 , nought , nadir , cipher , cypher
[3]	zero point , nobody , nothing , nonentity , (Slang) (US) nebbish , bupkis

adj.

[1]