1) Blither 2) Mumble 3) Mussitate 1) Cast 2) Drift 3) Impact crater on Mars 4) Move in an aimless way 5) Ramble 6) Range 7) Roam 8) Roll 9) Rove 10) Speak rapidly and incessantly 11) Stray 12) Swan 13) Talk indistinctly 14) To babble or prattle 15) To beg 16) To wander or walk aimlessly 17) To whine like a beggar 18) Tramp 19) Vagabond 
[Martian crater] Maunder Crater is an old, eroded crater in the Noachis quadrangle of Mars, located at 50 South and 358.5 West. It is 107.5 km in diameter and was named after Edward W.Maunder, a British astronomer (1851-1928). ...[lunar crater] The rim of Maunder is roughly circular, with a sharp edge that has not been significantly eroded. The inner walls are somewhat terraced, and slump down to a rough but level interior floor. At the midpoint of the crater is a double central peak, with the northeastern peak being the larger of the two. Surrounding the crater is ...
to grumble; to drivel; to mutter
• (n.) A beggar. • (v. t.) To utter in a grumbling manner; to mutter. • (v. i.) To mutter; to mumble; to grumble; to speak indistinctly or disconnectedly; to talk incoherently. • (v. i.) To beg.
Maund'er noun A beggar. [ Obsolete]Maund'er transitive verb To utter in a grumbling manner; to mutter. 
[v] - wander aimlessly