Word Study
let slide
THESAURUS
let slide
be caught napping, be neglectful, be negligent, default, disregard, fail, gloss over, ignore, lapse, let go, let pass, let ride, let slip, lose sight of, lose track of, neglect, nod, not care for, not get involved, not heed, not think, overlook, pass over, procrastinate, sleep, take for grantedFor further exploring for "let slide" in Webster Dictionary Online