Unassuming: modest, not arrogant or presumptuous, humble, unpretentious...
One of the most important pieces of homework a speaker has to do is to know who their audience is, even to the extent of knowing who is going to be in the audience (journalists, other experts, your peers…).
Mozambican-born Portuguese South African; reflecting on travel, writing, editing, life, family and change that has social impact; chief wide eyed in wanderer, wonderer and bottlewasher