1. So lacking in interest as to cause mental weariness
   "a ho-hum speaker who couldn't capture their attention"
   - boring, deadening, dull, irksome, slow, tedious, tiresome, wearisome, unamusing, draggy

See also: uninteresting

Encyclopedia: Ho-hum

• broad bean
• broad beech fern
• broad buckler-fern
• broad gauge
• broad hatchet
• broad interpretation
• broad jump
• broad leaved centaury
• broad leaved goldenrod
• broad-bean plant
• broad-brimmed
• broad-brush
• broad-headed
• broad-leafed
• broad-leaved
• broad-leaved bottletree
• broad-leaved dock
• broad-leaved everlasting pea
• broad-leaved montia
• broad-leaved plantain
• broad-leaved twayblade
• broad-minded
• broad-mindedly
• broad-mindedness
• broad-shouldered