only too

on·ly too

O o

Definitions of only too words

adverb only too without others or anything further; alone; solely; exclusively: This information is for your eyes only. 1
adverb only too no more than; merely; just: If it were only true! I cook only on weekends. 1
adverb only too as recently as: I read that article only yesterday. 1
adverb only too in the final outcome or decision: You will only regret your harsh words to me. 1
adjective only too being the single one or the relatively few of the kind: This is the only pencil I can find. 1
adjective only too having no sibling or no sibling of the same sex: an only child; an only son. 1

before 900

One of the 4% oldest English words

before 900; Middle English; Old English ānlich, ǣnlich. See one, -ly

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

A common word. It’s meaning is known to most children of preschool age. About 99% of English native speakers know the meaning and use the word.

Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".

This diagram is provided by Google Ngram Viewer