well grounded 
adjective
1Based on good evidence or reasons: her fears were well grounded...
- On another campaign promise, that of aid to cities, his position is similarly well grounded.
- So the assumption is psychologically well grounded.
- There is need to work out well grounded, multi-faceted and sustainable long-term measures on how to handle and manage drought situations.
2Having a good training in or knowledge of a subject: boys who are well grounded in traditional academic subjects...
- Carry on snapping I say, having checked this out with our photographers, who are pretty well grounded in the law of what can or cannot be photographed.
- In the field of science I'm a novice, but I'm well grounded in cow care.
- This wasn't just an argument of extremists, it was an argument of many people who were well grounded in biology.
- preteritive
- preteritive present
- preterito-presentia
- preterit perfect
- preterit-present
- preterm
- preterminal
- pretermission
- pretermit
- preternatural
- preternaturalism
- preternaturalist
- preternaturality
- preternaturally
- preternaturalness
- preternature
- preterperfect
- preterrestrial
- preter-royal
- pretersensual
- pretersensuous
- pretest
- pretext
- pretexta
- pretexted