Older borrowings from (e.g.) Swedish have had initial consonant clusters eroded. For example "koulu" <- school, "tuoli" <- stool.
More recent borrowings have retained their clusters, for example 'presidentti' = 'president'. However, it is common to hear these clusters eroded in speech ("resitentti") particularly, though not exclusively, by Finns who know little or no Swedish or English and who are not used to making sounds for letters such as d, c or x.
Note that in the sections below, wherever a is mentioned, ?/em> should also be understood, depending on vowel harmony.
Vowel phonemes
;Nasals
;Trills
The following is a partial list of strong -> weak correspondences:
Some example word pairs:
Consonants
;Plosives
;Finnish has no voiced plosives in native words - with the exception of /d/ that developed from /δ/ voiced dental fricative (as in English 'the'). \r\nWithout /d/, Finnish plosives have (in native words) no distinctive voice at all. The letters b and g do occur in Finnish in loanwords, but more often than not, they are pronounced voiceless, /p/ and /k/ respectively. Furthermore, the voiceless plosives in Finnish are never aspirated.
;The compound -ng- is present in mid-position in some inflected Finnish words, but it is pronounced /ŋŋ/.
;Laterals
;Fricatives
;[š] (as English 'sh') and [f] only appear in non-native words.
;Semivowels
Consonant gradation
The consonant preceding the inflection of a word (either noun or verb) is subject to consonant gradation. Broadly, a consonant will adopt a 'strong' form if the following syllable is 'open' - containing a double vowel or not ending in a consonant - and a 'weak' form otherwise.
Note that in any given grammatical situation, the consonant can grade either way depending on the word involved. Here are some examples:
There are rare exceptions to the general rule, some of which are noted in the noun cases section.Length
All phonemes except /υ, d, j/ have distinctive length except in dialects.Stress
Like Hungarian, Finnish always places the primary stress on the first syllable of a word.