There's just no SUBstitute for cleverness. Sylvester, to Tweety
TAT [not knitting]It may be held at lunchtime
MAYOSomething to save for a rainy day
LINT [not naval]Nile biter
ASP [not nail biter]Staples staples, briefly
CREASE [I thought golf, not clothes iron]
Theme entries:Sensational sapphire, say
SUBLIMESTONEEarly 1600's threat to the English throne?
BATTINGSUBSTANCEWhat a white flag indicates?
COMBATSUBMISSIONInferior salad dressing ingredient?
That, in Tijuana
ESO ["Eso Beso"]
BNAI crossed with ELAL crossed with OHARAS crossed with MCNAMARA