A month of Sundays

From Fresh Dictionary

English

Noun

a month of Sundays

1. ((idiomatic{{#if:|, {{{2}}}{{#if:|, {{{3}}}{{#if:|, {{{4}}}{{#if:|, {{{5}}}{{#if:|, {{{6}}}{{#if:|, {{{7}}}{{#if:|, {{{8}}}{{#if:|, {{{9}}}}}}}}}}}}}}}}}}})) A very long time; too long

   It seems like it has been a month of Sundays since we saw him last.

2. ((idiomatic{{#if:|, {{{2}}}{{#if:|, {{{3}}}{{#if:|, {{{4}}}{{#if:|, {{{5}}}{{#if:|, {{{6}}}{{#if:|, {{{7}}}{{#if:|, {{{8}}}{{#if:|, {{{9}}}}}}}}}}}}}}}}}}})) In the negative, "never in a month of Sundays": never ever; at no time whatsoever

   Never in a month of Sundays would I have imagined that you'd be this tall in real life!