The phrase "lukewarm attitude" means having a lack of enthusiasm, interest, or passion towards something. It suggests a mild or mediocre level of enthusiasm instead of being fully engaged or invested. Full definition
«The crass ineptitude and lukewarm attitude of this APC government is no longer tolerable, and therefore, we are calling on President Buhari and his team to return Nigeria to its state of booming economy before they assumed office in May, 2015, and then quit immediately to allow other capable leaders recover our ailing economy». (nigeriapoliticsonline.com)
Biafra Protest & Other Internal Security Challenges: Army reads riot act, warn officers against lukewarm attitude. (securitykingng.org)
The two continued to talk regularly, though less so as Milne became increasingly disappointed with Miliband's lukewarm attitude towards fighting on a left - wing programme. (newstatesman.com)