Green’s Dictionary of Slang

1. (also no fefe) absolutely not! not a chance! often intensified, e.g. no blooming fear!

1817		M. Edgeworth Love and Law I iv: No fear, I’ll not give up at law, or any way, to a M’Bride.
1835		J.C. Apperley Nimrod’s Hunting Tour (1874) 191: No fear on that score, David.
1846		Exeter Flying Post 8 Jan. 4/1: ‘No fear,’ says Ben.
1857		Bell’s Life in Victoria (Melbourne) 17 Jan. 3/1: ‘Well, your Honor,’ says he, ‘you’ll scee me before my time's up.’ ‘No fear,’ says the judge.
1862		Geelong Advertiser (Vic.) 4 Feb. 3/5: Are ‘Chance it’ ‘No fear,’ and ‘my word’ more to your liking, and does it never strike you that such terms are ‘slang,’ and that slang a true gentleman will ever avoid.
1863		J. Horrocks letter in My Dear Parents 28 Oct. 41: Never mind, it won’t break my heart. No fear.
1869		Melbourne Punch 4 Mar. 71/2: Your ‘Yes’ and ‘No’ do not exist among the white savages, but they are expressed by ‘My Word!’ and ‘No fear’.
1873		Morn. Post (London) 19 Mar. 6/4: ‘Now Giles, I fear you’ll get into trouble again with your gun!’ Giles: ‘No fear, sir!’.
1880		Bulletin (Sydney) 20 Nov. 9/1: ‘Oh, we’ll square that [i.e. a £1 debt] up afterwards,’ was the candidate’s reply. ‘No fear,’ answered the creditor.
1883		J. Greenwood Tag, Rag & Co. 143: ‘But you wouldn’t like to part with it or lose it?’ ‘No fear!’.
1888		‘Rolf Boldrewood’ Robbery Under Arms (1922) 347: Are we going to let you off after knocking over Daley? No dashed fear, mister.
1896		A. Morrison Child of the Jago (1982) 59: ‘You won’t let Weech ’ave it, will ye, Josh?’ [...] ‘No bloomin’ fear.’.
1900		Boy’s Own Paper 29 Dec. 195: ‘No fear!’ answered Marshal; ‘he can’t ride a dozen yards.’.
1903		Worcs. Chron. 11 Apr. 3/2: ‘The Magistrate says you’ve got to pay two pounds.’ ‘No dam fear,’ shouted the Chinaman.
1908		Leigh & Powell [perf. Marie Lloyd] Rum-tiddley-um-tum-tay! 🎵 Treated some to beer, / Did they jib? No fear!
1913		H. De Lisser Jane’s Career (1971) 11: But I goin’ back to Kingston, though! No fear!
1922		Joyce Ulysses 726: Theyre not going to be chaining me up no damn fear.
1924		S. Scott Human Side of Crook and Convict Life 23: Turn ‘copper’! [...] No bloomin’ fear! Not if it means twenty years.
1938		X. Herbert Capricornia (1939) 88: ‘Is that what you’re writing about in this book of yours?’ ‘No fear! I’ve learnt long ago that I’m expected to write about the brave pioneers.’.
1941		‘Bloody Hell’ in C.H. Ward-Jackson Airman’s Song Book (1945) 131: A bloody bob for bloody beer, / And is it good? No bloody fear!
1950		A. Buckeridge Jennings Goes To School 144: ‘No jolly fear,’ said Darbishire.
1960		H.E. Bates When the Green Woods Laugh (1985) 235: No chance of that, Pop said. Not if he knew it. No fear.
1978		(con. 1940s) J.G. Farrell Singapore Grip 117: Nobody wants their kids to end up with that accent ... no fear!
1985		S. Berkoff West in Decadence and Other Plays (1985) 118: mike: How’s your mother? ralph: She’s OK. mike: Still washing your knickers? ralph: No fear.
1991		J. Osborne Déjàvu Act I: J.P.: I’m sure you don’t want me to attempt to answer them. Alison: No fear.
2001		D. Looser Boobslang [U. Canterbury D.Phil. thesis] 125/1: no fear n. = no effect [...] no fefe n. = no effect.
2003		McGill Reed Dict. of N.Z. Sl.

2. absolutely! without any doubt!

1874		J. Greenwood Wilds of London (1881) 244: I’ll do summut wot’ll make it hot for me next time, no fear.
1881		‘’Arry on Woman Rights’ in Punch 2 Apr. 156/1: And whenever there’s hens on the crow, ’Arry’s good for a hinnings — no fear!
1905		Sun. Times (Perth) 1 Oct. 9/8: ‘That Tottie’s a ringer.’ ‘No fear’.
1941		N.Y. Herald Trib. 29 June 9/3: Other random remarks that turn up in ordinary daily conversation are: [...] ‘No fear’ means ‘you bet.’.