Possibly, plausibly; with some likelihood.

As may easily happen; probably, perhaps. Obsolete.

Probably, in all probability. Frequently in most (also very) likely.

Probably; in a likely or probable manner.

Probability, likelihood. Chiefly in by (also of) likelihead: probably, in all probability (cf. likelihood, n. phrases 1).

in all likeliness, †by (also of) likeliness: probably, most likely, in all likelihood. Cf. likelihood, n. phrases 1.

by all (also most) likelihood: in all probability, probably. Formerly also †by likelihood. Now rare.

As may be proved; demonstrably.

†of (all) likelihood: in all probability; probably. Obsolete.

In all likelihood, probably. Also in weaker sense: perhaps, possibly.

Likely, probably. Usually in superlative, comparative, or similar modified or graded collocations, as most like, very like. Cf. also (as) like as not…

= belike, adv.

in (all) likelihood: in all probability; probably.

As a sentence adverb qualifying a whole statement: almost certainly; as far as one knows or can tell; in all probability; most likely. (Now the…

in (also †by) all probability: probably; considering what is probable. Formerly also †by (also †in) probability.

in (also †by) all probability: probably; considering what is probable. Formerly also †by (also †in) probability.

Qualifying a statement as likely but not known for certain: as one may presume or reasonably suppose; in all probability.

Probably; esp. as a graphic abbreviation, frequently in lexicographical contexts.

English regional (chiefly midlands). Possibly, probably; in all likelihood.

In a predictable manner; as might have been predicted.

= probably, adv. 2.

As a sentence adverb: it is likely; probably.