mild-mannered

adj

adj

Calm, gentle, moderate and unexcitable in attitude or disposition.

That's because, having left behind his senior position on the national network at the West Midlands Rail Executive in mid-March […], the energetic but mild-mannered Holmes has brought a distinctly forward-looking agenda to the Leicestershire heritage operation he now leads.2023 August 23, Malcolm Holmes tells Paul Stephen, “A mission to develop GCR's legacy”, in RAIL, number 990, page 38:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.