maybe

https://tts.langeek.co/read?text=bWF5YmU&hash=2e703f0731b07cd2a681f4b1bcf099e778cad535&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=bWF5YmU&hash=ad4c9914679664b4d94865c0da3c1bf60b7ffaa8&lang=en&cache-only=0&driver=googletts&accent=GB

probably

https://tts.langeek.co/read?text=cHJvYmFibHk&hash=2f769ea3cd6eb68c2a34c4b3d215f0b2dd97cdd1&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=cHJvYmFibHk&hash=499d8a97405316a9ccfe4ba869bf3db6c5b6859c&lang=en&cache-only=0&driver=googletts&accent=GB

tentatively

https://tts.langeek.co/read?text=dGVudGF0aXZlbHk&hash=4a70892ae9bcf7f1a3b551d141d0faa34a91ef32&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=dGVudGF0aXZlbHk&hash=c1bf32a44ba52205593d80e77509979204a2aa7f&lang=en&cache-only=0&driver=googletts&accent=GB

feasibly

https://tts.langeek.co/read?text=ZmVhc2libHk&hash=6250a1183110c6f6f101c727a15b4b9a716d97f6&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=ZmVhc2libHk&hash=a5fc7a20c866f4039d0281e170b4c64cca5537a3&lang=en&cache-only=0&driver=googletts&accent=GB

perhaps

https://tts.langeek.co/read?text=cGVyaGFwcw&hash=ecf07260b320774d6f3d2373c9d33bac1485b850&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=cGVyaGFwcw&hash=c7d8a8a20367de014e1fbb0a38211e7d8750e649&lang=en&cache-only=0&driver=googletts&accent=GB

possibly

https://tts.langeek.co/read?text=cG9zc2libHk&hash=d447003ec344ec612b8c0ef449ac021172fa9493&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=cG9zc2libHk&hash=1e93a07ca6f2bce4edd44686e57c87508463d5e5&lang=en&cache-only=0&driver=googletts&accent=GB

potentially

https://tts.langeek.co/read?text=cG90ZW50aWFsbHk&hash=10786e64b341880a6d398a0b5cde0a72e8bd3dfb&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=cG90ZW50aWFsbHk&hash=ceaa713625efa4e786165a73b1f8c16b9aaded34&lang=en&cache-only=0&driver=googletts&accent=GB

(most|very) likely

https://tts.langeek.co/read?text=bW9zdCBsaWtlbHk&hash=68b622a537fdb5a586ee138d735e2c7ed6292f98&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=bW9zdCBsaWtlbHk&hash=f72c4e5f1f5b18ff46e3ef59a15e89fe068e3dd0&lang=en&cache-only=0&driver=googletts&accent=GB

improbably

https://tts.langeek.co/read?text=aW1wcm9iYWJseQ&hash=2d07643a7e142104369bf6e9ce0bfa7ae6cf23f3&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=aW1wcm9iYWJseQ&hash=80c90b9d9f5c390287393d57ea0c1d184bce2ebe&lang=en&cache-only=0&driver=googletts&accent=GB

impossibly

https://tts.langeek.co/read?text=aW1wb3NzaWJseQ&hash=df193059a01fd0f104e1c2c8507fdf3e2fdc9286&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=aW1wb3NzaWJseQ&hash=4c251b7cfca0876ef96014a229f5e70d175d5e5c&lang=en&cache-only=0&driver=googletts&accent=GB

reportedly

https://tts.langeek.co/read?text=cmVwb3J0ZWRseQ&hash=dc3041749ecc51be4332b390a3bf48fe0bb524cc&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=cmVwb3J0ZWRseQ&hash=aaca79fbe72525588a133fd00818bc8ad1c689c9&lang=en&cache-only=0&driver=googletts&accent=GB

allegedly

https://tts.langeek.co/read?text=YWxsZWdlZGx5&hash=e373b82cec28d9341b138107bb4944b8ca63cdb1&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=YWxsZWdlZGx5&hash=d3e36e9aeb298bf5aa556429666c2d7977405e85&lang=en&cache-only=0&driver=googletts&accent=GB

purportedly

https://tts.langeek.co/read?text=cHVycG9ydGVkbHk&hash=723307d3c3c360c0ba597ce634ed342de33b9663&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=cHVycG9ydGVkbHk&hash=0139496648702a9ccd86de4c4b8577749021a592&lang=en&cache-only=0&driver=googletts&accent=GB

conceivably

https://tts.langeek.co/read?text=Y29uY2VpdmFibHk&hash=fdd8c880ace9ab05739de540ee0f45a80699fc38&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=Y29uY2VpdmFibHk&hash=5095e4da15f79aca2ad4bdcdf6e51720dab5e1bb&lang=en&cache-only=0&driver=googletts&accent=GB

questionably

https://tts.langeek.co/read?text=cXVlc3Rpb25hYmx5&hash=b02d3f9f5ef8b70c29c1e74dfb79e6524776add3&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=cXVlc3Rpb25hYmx5&hash=89a8ab483f95309d7e5e6a945277ab31b5f53c35&lang=en&cache-only=0&driver=googletts&accent=GB

plausibly

https://tts.langeek.co/read?text=cGxhdXNpYmx5&hash=22b67a17ad69c258d83dfa7a18688031f6168bce&lang=en&cache-only=0&driver=googletts

https://tts.langeek.co/read?text=cGxhdXNpYmx5&hash=d86a04c7992ec788f4dfbda28774ecb908356995&lang=en&cache-only=0&driver=googletts&accent=GB

These adverbs indicate that someone is not sure about their statement or opinion and only consider them possible, like "probably", "perhaps", "allegedly", etc.

Adverbes d'incertitude

Adverbes anglais se référant à "l'incertitude"

Adverbs of Uncertainty

English Adverbs Referring to "Uncertainty"