What's the difference between lackadaisical and lackaday?

Lackadaisical

Definition:

(a.) Affectedly pensive; languidly sentimental.

Example Sentences:

(1) But this is fairly typical of the flat-footed and lackadaisical attitude that we’ve seen from the outset.
(2) In this week's small-screen news, Alan Carr abandons his planned sitcom about dog walkers, blaming himself for being too lackadaisical to make it happen ; London Live, the Evening Standard's new London TV station, has bought up the hit YouTube sitcom All About the Mackenzies ; and Peep Show's imminent demise has been confirmed by Channel 4 head of comedy Phil Clarke .
(3) The prime minister, who has often been criticised for a lackadaisical approach to government, showed that he had learnt from his political hero Harold Macmillan when he wielded the No 10 carving knife in a manner rarely seen in recent years.
(4) The lack of robust incentives or sanctions from funders fosters a lackadaisical attitude among scientists, who must also bear some of the responsibility for the slow adoption of open access.
(5) • Markets reacted lackadaisically but there were some warnings in the financial world that this could be bad.
(6) They used to be lackadaisical but they got involved and found out that if you become part of a movement, you can change things.
(7) Jeb Bush backs brother's NSA surveillance program to keep America safe Read more In a speech that was sharply skeptical of Iran, demonstratively supportive of Israel and disdainful of a White House foreign policy that he characterized as lackadaisical and foolish, Bush covered everything from the legacy in Iraq and Israeli prime minister Binyamin Netanyahu’s controversial visit to Washington to surveillance reform and relations with Cuba.
(8) Though AIDS was expected to arrive in Brazil, complacent, unconcerned officials responded in a lackadaisical manner through the veil of an abstract, inappropriate, and ideological Western-oriented model.
(9) A Conservative peer and former cabinet minister has attacked the UK media's "lackadaisical" response to the US whistleblower Edward Snowden and called on "defenders of liberty" to speak out against invasion of personal freedoms by the intelligence services.
(10) The "world team" played lackadaisical football, letting passes slide through and melting away whenever Kadyrov, stocky and heavy on his feet, had the ball.
(11) It means that far too many young people are lackadaisical in the way they present themselves for work.” He continued: “Youth unemployment in our country is far too high, and it is in everyone’s interest to make sure that young people receive the very best education and training to improve this situation.” Let’s all applaud the suggestion that youth unemployment is a problem the young people have brought on themselves, that employers are sweating plasma trying to find a single candidate who doesn’t turn up to the interview four days late, in pyjamas, with crayons stuffed up their nose.
(12) They moved to their own unpredictable beat, so much so that I would not have put money on them still being with us today, so laidback was their attitude, so lackadaisical their work rate, so uninterested were they in press or promotion.
(13) While the company has run afoul of US law for its lackadaisical approach to questions of real estate ownership, it has in Cuba an opportunity to start fresh with a government newly open to American businesses.
(14) "I am very surprised at the way in which the press in Britain has been so lackadaisical and not seen that there are issues here of huge importance.
(15) She told the Guardian the official investigation had been at best a “lackadaisical” effort and at worst a “huge fabrication”.
(16) We want the company hosting these threats to be less lackadaisical and able to respond faster.
(17) She sounds lackadaisical, but while she describes herself as "calm and laid-back", she also says she will "fight and fight and fight to keep acting in my life.
(18) From there they both won King’s Scholarships to Eton where Johnson’s famously lackadaisical approach – he failed to prepare his speech – led them to lose the house debating competition.