12 Across - Make unrealistic claims for (8) O_ _ _S_ _ _
16 Across - My Word! (8) _ _ _ _N_ _ _
27 Across - Calm (9) _ _ _ _ _ _ E _ _
29 Across - Times long ago (3,3,4) no letters
2 Down - Old Calculator (5,4) S_ I_ _ _U_ _
4 Down - Neutral (3-7) N _ N _ _ _ _ _ _ _ first 3 Non
14 Down - Having safely reached a destination (4,3,3) no letters.
24 Down - Absurd situation (5) S_ _ _ _