pithy
PITH-eeadjMeaning short but full of meaning
Memory hook PIT-HY: a tiny PIT, a whole tree. A tiny peach pit holds a whole tree inside it. A pithy saying is the same: a few words with a big idea packed in.
Grandpa’s pithy advice fit on a sticky note: “Measure twice, cut once.”
In context The speech was long and dull, but its closing line was pithy: “Start small, start now.” People were still quoting it weeks later.
Similar meaningful, punchy, concise, telling
Opposite wordy, rambling, empty
From pith, the soft core of a plant stem; the pith of an idea is its core.