in truth: in fact, as a fact; truly, really, indeed.

in faith, i'faith y'faith: in truth, really, truly. Frequently used parenthetically as an oath or to emphasize the truth of a statement. Cf…

As an exclamatory phrase: = sense B. Cf. in faith at faith, n. int.phrases 1a(b). Now rare.

Perhaps. Obsolete.

in effect: (originally) in fact, in reality (opposed to in show, in words); (subsequently) virtually, substantially, so far as the result is…

In reality, in real nature or essence, opposed to what is merely external or apparent.

In effect; in fact, in reality; so far as the result is concerned.

In action; in fact, in reality, really. Opposed to possibly, potentially, theoretically, etc.

In reality; in a real manner. Also: in fact, actually.

= in truth at phrases 1c. Now archaic.

The fundamental character, essence, or reality. Now only in phrases: see phrases 2.

for a truth: = in truth at phrases 1c. Now rare (Irish English in later use).

in fact: in reality, actually, as a matter of fact. Now often used parenthetically as an additional explanation or to correct a falsehood or…

Actually, genuinely, really. (Now the most common sense.)

In medieval Latin phrase in esse, in actual existence; opposed to in posse, in potentiality.

in fact, in reality, in actual existence, force, or possession, as a matter of fact. Very frequently opposed to de jure. Used also as an adj. =…

In fact, really. Obsolete.

In actual fact, in reality, in truth. Now rare except with a more direct allusion to sense 11.

in point of fact: with regard to factual accuracy; in reality, actually. Now often used parenthetically as an additional explanation or to correct…

In an affirmative, real, or actual manner; in relation to what is, as distinguished from what is not; actually. Also: optimistically; for the better…

in point of event: with regard to what has happened or will happen; in reality. Obsolete.

= in effect at effect, n. phrases. Actually, in fact. Obsolete.

With reference to thought, belief, or intention: genuinely, actually, really; in all seriousness.

Chiefly in representations of speech: = really, adv.2 adj.

Philosophy. As an object of consciousness as distinct from the perceiving or thinking subject; as something external to or independent of the…

Chiefly colloquial and regional. Actually, really; positively, truly; certainly. Also (Scottish) as an emphatic affirmative: definitely; yes, indeed.

in actual fact: in reality, contrary to expectation or appearance; (more generally) really, actually, as a matter of fact. Cf. fact, n. int.adv.…

in a factual manner; as regards facts.

U.S. regional (chiefly southern and western). Really, completely; actually, literally. Frequently in just naturally. Now rare.

by means, or by way of a transaction; practically.

= as a matter of fact at matter of fact, n. 1c.