Looking for words with a similar meaning to Pocket-veto

Solution 1:

In US English, you can use to table

Postpone consideration of:

I'd like the issue to be tabled for the next few months

(Oxford dictionary)

By tabling a bill, either literally or figuratively, the president effectively pocket vetoes it if it's less than ten days before Congress adjourns.

Solution 2:

If you want very informal:

blow off

to ignore, evade, or treat as unimportant ("I mentioned his insulting remark, and he just blew the whole thing off"); to not go to or participate in ("He blew off his first-period class three times that week"); to fail to meet (someone) as planned without alerting the person beforehand ("I waited 20 minutes before I realized my sister had blown me off").

(dictionary.com)

Solution 3:

Perhaps this, which implies that missing the opportunity is not intentional:

miss the boat - (informal) to lose an opportunity to do something by being slow to act

If there is full intent, you might just pass on it, or take a pass on it.

pass on something - to refuse an opportunity

(Cambridge Dictionary)