Onside
adj.kind, thoughtfuleveryday
What it means
Supportive of and in agreement with someone.
Reach for it when describing someone as supportive of a plan, person, or position
Once the nurse understood the change, she was fully onside.
Choose between these
6- playful
aboard
informal commitment to a plan is meant
not when Aboard can sound American and project-specific.
- warm
an ally
ongoing support is relational and active
not when Ally is a stronger identity and requires behavior.
- warm
active encouragement is the key quality
not when Support can be partial or conditional.
- professional
aligned
goals or interests point in the same direction
not when Alignment can be temporary and strategic.
- professional
in agreement
shared position is all that is known
not when Agreement does not guarantee active help.
- formal
understanding makes someone receptive
not when Sympathy falls short of endorsement.
Said against
3- opposed
- hostile
- against
It naturally appears in
3- get someone onside
Early consultation helped get the nursing team onside.
- kept residents onside
Clear updates kept residents onside during the road closure.
- fully onside
Once she saw the access plan, the principal was fully onside.
Where this comes from
Onside is chiefly British informal usage and can imply persuasion for strategic advantage rather than principled agreement.
- wiktionary, English adjective, supporting or in agreement sense opens in a new tab · retrieved 2026-07-27
The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.