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)