Communicate is a verb that hides its own specifics: it says meaning moved but never how, where or to whom. Choosing a better word is mostly choosing a channel, and the thesaurus will not do that for you.
What communicate hides
Communicate covers any exchange of meaning, which makes it too broad when the sentence needs to say how the message moved.
The verb is correct everywhere; precision is the only reason to swap it. Merriam-Webster's thesaurus groups convey, impart, transmit and disseminate around it, each narrowing the picture. If your sentence would answer the question how did the message move, communicate has left that question open.
Written channels: convey, impart, state

In writing, convey and impart carry the message, while state and report present information, and disseminate suits formal broadcast contexts.
| Verb |
Best use |
Example |
| convey |
carrying meaning or tone |
the email conveys urgency |
| impart |
sharing knowledge or values |
the coach imparted discipline |
| state |
declaring a position |
the report states the risks |
| report |
presenting findings |
the team reported delays |
| disseminate |
formal distribution |
disseminate the findings |
Impart adds a teacherly flavour that suits values and skills, not data.
Spoken and workplace channels
In speech, speak to, brief and update describe the interaction better than communicate, and liaise names coordination between parties.
Singapore workplace English leans on update and liaise, and both are good English in moderation; overuse reads as jargon. I updated the client and I liaised with HR say more than I communicated with them, because they name the actual act.
Check the grammar pattern before you swap
Many replacements change their pattern: you communicate with someone but convey something to them.
Wrong: she conveyed the client about the delay. Right: she conveyed the delay to the client. Wrong: he imparted to the team. Right: he imparted advice to the team. A thesaurus swap that ignores patterns creates errors that spell-checkers miss, because every word is spelled correctly and the sentence is still broken.
FAQ
Is liaise good workplace English in Singapore?
Yes in moderation for cross-team coordination, but name the action directly when possible.
Can I write communicate the news to her?
You can, but convey the news to her is the tighter pattern; communicate with her about the news is the other safe shape.
Which replacement is most formal?
Disseminate for spreading information and impart for conveying knowledge sit at the formal end.