Collocations for understand - verb

clearly, well
completely, fully, perfectly, quite, thoroughly, totally, truly
I fully understand the reason for your decision.

better
These categories help us to better understand our readers.

not really, not truly
Her actions wounded him in a way he did not really understand.

not necessarily
They won't necessarily understand the pros and cons of the matter.

not entirely, partially
a complex topic which I only partially understand

barely, hardly
I could barely understand a word of his story.

adequately
accurately, correctly, precisely, properly, rightly
If I've understood you correctly …

easily, readily
The reasons for this decision are not easily understood.

immediately, instantly, quickly, suddenly
The girl understands immediately and promises to be more careful.

finally
I finally understood what she meant.

instinctively, intuitively
She intuitively understood his need to be alone.

be able to, can
I can't understand what all the fuss is about.

be unable to, fail to
attempt to, hope to, seek to, strive to, try to
Only specialists can hope to understand them.

struggle to
a woman struggling to understand an incomprehensible situation

help (to), help sb (to)
begin to, start to
come to, learn to
We came to understand why certain things happened in certain ways.
She soon learnt to understand English.

appear to, seem to
claim to
I don't claim to understand it.

be easy to, be simple to
be difficult to, be hard to
It is difficult to understand why he reacted in that way.

about
We understand little about this disease.

as
These beliefs are best understood as a form of escapism.

be commonly understood, be generally understood, be popularly understood
What is generally understood by ‘democracy’?

be imperfectly understood, be incompletely understood, be poorly understood
The effects of these chemicals on the body are still poorly understood.

be universally understood, be widely understood

Understand is used with these nouns as the object:
basics, business, cause, complexity, concept, concern, culture, danger, difference, distinction, enormity, essence, extent, feeling, frustration, fundamentals, gist, gravity, grief, impact, implication, importance, influence, instruction, intricacy, issue, joke, language, limitation, logic, magnitude, meaning, mind, motivation, motive, mystery, nature, necessity, need, nuance, phenomenon, plight, point, point of view, politics, predicament, problem, reality, reason, reasoning, reference, relationship, reluctance, risk, role, rule, science, sentiment, seriousness, significance, situation, subtlety, symbol, symbolism, system, technicality, terminology, text, value, viewpoint, word, workings