Đồng nghĩa của by the by

accidental extraneous extrinsic incidental lesser marginal minor secondary subordinate subsidiary supplementary unimportant accessory adventitious alien external foreign immaterial irrelevant parenthetical peripheral supervenient tangential inessential non-essential unnecessary by the way beside the point of little account by-the-by by-the-way related explanatory qualifying inserted interposed parenthetic bracketed episodic intermediate in brackets in parentheses in parenthesis inconsequential trivial trifling negligible insignificant ancillary background auxiliary small fiddling nugatory foolish inconsiderable petty little small-fry frivolous less important slight minute occasional nonessential dispensable expendable of less importance Mickey Mouse contributing contributory paltry piddling piffling picayune footling measly niggling nominal pointless inappreciable of no account of no consequence worthless nickel-and-dime superficial meaningless piddly pimping light not worth mentioning no-account lightweight de minimis peanut of no importance of little importance insubstantial minimal casual of little consequence chicken meager meagre unessential minuscule small-time tiny small-bore neither here nor there not worth bothering about dinky needless redundant valueless unneeded scanty shallow not worth speaking of silly accompanying of no moment superfluous inadequate pettifogging optional derisory insufficient twopenny-halfpenny penny-ante mingy puny ignorable additional cosmetic useless unsubstantial inferior exiguous second-rate mean shoestring inapposite not required infinitesimal of no great concern idle gratuitous unrequired miserable trite unwanted lower token pitiful pathetic off the subject poxy collateral low-ranking lower-level wide of the mark uncalled for purportless minor-league not needed concomitant corresponding correlated low unconnected not pertinent not germane borderline impertinent excessive inappropriate inapplicable indirect associated minimum flimsy unrelated not to the point irrelative skimpy out of place imperceptible everyday unmerited subservient futile unwarranted purposeless smaller nondescript diminutive uncritical noncompulsory two-bit nothing to do with it dependent slender nothing base cheap of minor importance bush-league not to the purpose senseless uncalled-for no great shakes surplus time-wasting impractical exorbitant supererogatory miserly ornamental lilliputian of no value neglectable stingy sparse limited adscititious beggarly frothy zero zilch tinpot zip null indifferent de trop second-class poor modest scant ungenerous frugal empty obscure smalltime ineffectual uncelebrated contingent not necessary not essential shabby scratch unconsiderable contemptible junior inconsequent minus tacky second-string surplus to requirements of little import outermost outside tenuous tributary under substract subject second reserve unintended perimetric outer exterior unconsidered runt wimpy shrimp below the mark vain hollow loitering jejune inane idling vapid insipid banal side similar commonplace surface sideline bordering weak little bitty bitty smallish no biggie small potatoes two bit entry level of no significance big zero resulting all the same littlest least smallest wanky slightest connected beside the question wide of the point not important nihil ad rem not at issue not significant not the main on the side lowest momentary atomic microscopic skin-deep evanescent vanishing no big deal no big thing merest basal minutest tiniest fewest analogous alike attendant kindred derivative derived resultant consequential circumstantial next to none least possible very little smallest amount of next to no linked cognate correspondent extra inadmissible inapt intrusive disposable fortuitous undesired wanton wasted avoidable haphazard causeless prodigal contextual hardly worth mentioning random undesirable chance no need to no purpose to no avail

incidentally parenthetically apropos BTW en passant casually in passing obiter remotely subordinately unexpectedly by the way as it happens by the bye speaking of which as a by-product as side effect in related manner while on the subject funnily enough interestingly enough adjectitiously in the course of conversation fortuitously coincidentally accidentally by way of explanation as an aside it might also be noted one could also note another thing in parenthesis by chance by a stroke of luck luckily speaking of

by the bye by the day by the dozen by the grace of God by the joint action of by then by the book by the board by the agency of by the by that very fact by that time